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We've just migrated our website to new webservers, in the process going from IIS6 to IIS8. Everything works as expected, except for one thing. Whenever a user loads a page after their session forms authentication has expired, they trigger a null reference exception.
The users themselves get redirected correctly to the login page, as we would expect, but apparently the original page loaded keeps executing, and once it reaches a part of the page that is depending on the user to be logged in, we hit a null reference exception.
On IIS6 we never had this issue, On IIS8 we get this a few hundred times a day, which is quite annoying.
This may just be a config issue, but so far my googling haven't turned up anything
Web.config (slightly redacted to protect the guilty)
<configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
<configSections>
<sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication" />
<sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="Everywhere" />
<section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication" />
<section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication" />
<section name="roleService" type="System.Web.Configuration.ScriptingRoleServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication" />
</sectionGroup>
</sectionGroup>
</sectionGroup>
<section name="log4net" type="System.Configuration.IgnoreSectionHandler" />
</configSections>
<system.web>
<pages enableViewStateMac="true">
<controls>
<add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add tagPrefix="asp" namespace="System.Web.UI.WebControls" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
</controls>
</pages>
<httpRuntime maxRequestLength="8192" executionTimeout="800" />
<httpHandlers>
<remove path="*.asmx" verb="*" />
<add path="*.asmx" verb="*" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false" />
<add path="*_AppService.axd" verb="*" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false" />
<add path="ScriptResource.axd" verb="GET,HEAD" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false" />
<add path="BusyBoxDotNet.axd" verb="*" type="BusyBoxDotNet.ResourceHttpHandler, BusyBoxDotNet" />
<add path="ChartAxd.axd" verb="*" type="Dundas.Charting.WebControl.ChartHttpHandler" validate="false" />
</httpHandlers>
<httpModules>
<add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
</httpModules>
<globalization culture="en-US" />
<sessionState mode="StateServer" timeout="480" />
<authentication mode="Forms">
<forms cookieless="UseCookies" domain=".stuff.topleveldomain" enableCrossAppRedirects="true" name=".morestuff" timeout="480" />
</authentication>
<machineKey validationKey=".." decryptionKey="..." validation="SHA1" />
<customErrors mode="RemoteOnly" defaultRedirect="~/Public/ErrorPage.aspx">
<error statusCode="404" redirect="~/Public/FileNotFound.htm" />
</customErrors>
<membership defaultProvider="CustomAspNetSqlMembershipProvider">
<providers>
<remove name="AspNetSqlMembershipProvider" />
<add name="CustomAspNetSqlMembershipProvider" type="System.Web.Security.SqlMembershipProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" connectionStringName="Common" enablePasswordRetrieval="false" enablePasswordReset="false" requiresQuestionAndAnswer="true" applicationName="stuff" requiresUniqueEmail="true" minRequiredPasswordLength="4" minRequiredNonalphanumericCharacters="0" passwordFormat="Clear" maxInvalidPasswordAttempts="10000" passwordAttemptWindow="10" passwordStrengthRegularExpression="" />
</providers>
</membership>
<roleManager enabled="true" defaultProvider="CustomAspNetSqlRoleProvider">
<providers>
<clear />
<add connectionStringName="Common" applicationName="stuff" name="CustomAspNetSqlRoleProvider" type="System.Web.Security.SqlRoleProvider" />
</providers>
</roleManager>
<compilation debug="true">
<assemblies>
<add assembly="System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
<add assembly="System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
<add assembly="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
<add assembly="System.Xml.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
<add assembly="System.Data.DataSetExtensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
<add assembly="System.Web.Extensions.Design, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add assembly="System.Data.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
</assemblies>
</compilation>
</system.web>
<!-- Configuration for pages that do not require authentication -->
<location path="public">
<system.web>
<authorization>
<allow users="*" />
</authorization>
</system.web>
</location>
<location path="Images/Misc">
<system.web>
<authorization>
<allow users="*" />
</authorization>
</system.web>
</location>
<location path="Images/Pics">
<system.web>
<authorization>
<allow users="*" />
</authorization>
</system.web>
</location>
<location path="stylesheet">
<system.web>
<authorization>
<allow users="*" />
</authorization>
</system.web>
</location>
<system.codedom>
<compilers>
<compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CSharp.CSharpCodeProvider,System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" warningLevel="4">
<providerOption name="CompilerVersion" value="v3.5" />
<providerOption name="WarnAsError" value="false" />
</compiler>
<compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.VisualBasic.VBCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" warningLevel="4">
<providerOption name="CompilerVersion" value="v3.5" />
<providerOption name="OptionInfer" value="true" />
<providerOption name="WarnAsError" value="false" />
</compiler>
</compilers>
</system.codedom>
<system.webServer>
<validation validateIntegratedModeConfiguration="false" />
<modules>
<remove name="ScriptModule" />
<add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
</modules>
<handlers>
<remove name="WebServiceHandlerFactory-Integrated" />
<remove name="ScriptHandlerFactory" />
<remove name="ScriptHandlerFactoryAppServices" />
<remove name="ScriptResource" />
<add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add name="ScriptResource" verb="GET,HEAD" path="ScriptResource.axd" preCondition="integratedMode" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
</handlers>
<defaultDocument>
<files>
<remove value="index.php" />
<remove value="default.aspx" />
<remove value="iisstart.htm" />
<remove value="index.html" />
<remove value="index.htm" />
<remove value="Default.asp" />
<remove value="Default.htm" />
<add value="login.aspx" />
</files>
</defaultDocument>
</system.webServer>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="System.Web.Extensions" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.Extensions.Design" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0" />
</dependentAssembly>
</assemblyBinding>
</runtime>
</configuration>
That makes me think about the endresponse parameter of the HttpResponse.Redirect method (Indicates whether execution of the current page should terminate):
If you don't explicitely end the current request while performing a redirect, the execution flow will go on. That could be what happens in your case.
For a matter of performance, the most commonly used Redirect method, Redirect(String), call internally the Redirect(String, Boolean) override, with false as value for the endresponse parameter.
So you could try to replace the call(s) to
Response.Redirect("[login URL]");
by
Response.Redirect("[login URL]",true);
and see if it solve your problem
More informations on msdn:
https://msdn.microsoft.com/en-us/library/a8wa7sdt(v=vs.110).aspx
Try setting your App Pool to Class Mode vs. Integrated
It is worth specifying the default page and login page if user is not authenticated. It will prevent executing code in other pages.
<authentication mode="Forms">
<forms loginUrl="~/Login" timeout="480" defaultUrl="~/" />
</authentication>
The live application has been deployed for a while and works fine. The application pool is v2.0 Classic. It is hosted on Windows Server 2008 R2.
My local environment is Windows 8.1. I'm debugging in IIS Express. I get the following errors in the browser developer tools:
Uncaught Error: ASP.NET Ajax client-side framework failed to load.
Uncaught ReferenceError: Sys is not defined
All of the ScriptResource.axd GET requests result in a 404 error. Any ideas on fixing the .NET Ajax?
Btw, I've already done all the suggestions that I've previously seen on how to resolve this, particularly with the handlers. I have the following web.config.
<?xml version="1.0"?>
<configuration>
<configSections>
<sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
<sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="Everywhere"/>
<section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
<section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
<section name="roleService" type="System.Web.Configuration.ScriptingRoleServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
</sectionGroup>
</sectionGroup>
</sectionGroup>
</configSections>
<appSettings>
<!-- snipped -->
</appSettings>
<connectionStrings>
<!-- snipped -->
</connectionStrings>
<system.web>
<compilation debug="true" strict="false" explicit="true">
<assemblies>
<add assembly="System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
<add assembly="System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
<add assembly="System.Drawing.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
<add assembly="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
<add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add assembly="System.Xml.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
<add assembly="System.Data.DataSetExtensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
</assemblies>
</compilation>
<pages>
<namespaces>
<clear/>
<add namespace="System"/>
<add namespace="System.Collections"/>
<add namespace="System.Collections.Specialized"/>
<add namespace="System.Configuration"/>
<add namespace="System.Text"/>
<add namespace="System.Text.RegularExpressions"/>
<add namespace="System.Web"/>
<add namespace="System.Web.Caching"/>
<add namespace="System.Web.SessionState"/>
<add namespace="System.Web.Security"/>
<add namespace="System.Web.Profile"/>
<add namespace="System.Web.UI"/>
<add namespace="System.Web.UI.WebControls"/>
<add namespace="System.Web.UI.WebControls.WebParts"/>
<add namespace="System.Web.UI.HtmlControls"/>
</namespaces>
<controls>
<add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add tagPrefix="telerik" namespace="Telerik.Web.UI" assembly="Telerik.Web.UI"/>
<add tagPrefix="asp" namespace="System.Web.UI.WebControls" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</controls>
</pages>
<httpHandlers>
<remove verb="*" path="*.asmx"/>
<add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add verb="GET,HEAD" path="ScriptResource.axd" validate="false" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add path="Telerik.Web.UI.WebResource.axd" verb="*" type="Telerik.Web.UI.WebResource, Telerik.Web.UI" validate="false"/>
</httpHandlers>
<httpModules>
<add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</httpModules>
<authentication mode="Forms">
<forms loginUrl="login.aspx" timeout="120" slidingExpiration="true"/>
</authentication>
<authorization>
<allow roles="(snipped)"/>
<deny roles="(snipped)"/>
<deny users="?,*"/>
</authorization>
<roleManager enabled="true" defaultProvider="SimpleRoleProvider">
<providers>
<clear/>
<add name="SimpleRoleProvider" type="MyProject.SimpleRoleProvider" applicationName="MyProject"/>
</providers>
</roleManager>
<customErrors mode="RemoteOnly" defaultRedirect="error">
<!--<error statusCode="403" redirect="NoAccess.htm" />
<error statusCode="404" redirect="FileNotFound.htm" />-->
<error statusCode="500" redirect="error/500.html"/>
</customErrors>
<sessionState mode="InProc" cookieless="false" timeout="240"/>
</system.web>
<system.webServer>
<validation validateIntegratedModeConfiguration="false"/>
<handlers>
<remove name="WebServiceHandlerFactory-Integrated" />
<add name="Telerik.Web.UI.WebResource.axd_*" path="Telerik.Web.UI.WebResource.axd" verb="*" type="Telerik.Web.UI.WebResource, Telerik.Web.UI" preCondition="integratedMode,runtimeVersionv2.0" />
<add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
<add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
<add name="ScriptResource" preCondition="integratedMode" verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
</handlers>
<rewrite>
<rules>
<rule name="API Rule" stopProcessing="true">
<match url="api/(.*)" />
<conditions>
<add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true"/>
<add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true"/>
<add input="{REQUEST_URI}" pattern="/api/PublicService\.svc.*" negate="true" />
</conditions>
<action type="Rewrite" url="api/PublicService.svc/{R:1}" appendQueryString="true" />
</rule>
<rule name="Main Rule" stopProcessing="true">
<match url=".*"/>
<conditions logicalGrouping="MatchAll">
<add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true"/>
<add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true"/>
</conditions>
<action type="Rewrite" url="index.php/{R:0}"/>
</rule>
</rules>
</rewrite>
<modules>
<remove name="ScriptModule"/>
<add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</modules>
</system.webServer>
<location path="ScriptResource.axd">
<system.web>
<authorization>
<allow users="*"/>
</authorization>
</system.web>
</location>
<!-- other locations snipped -->
<system.serviceModel>
<extensions>
<behaviorExtensions>
<add name="MyWebHttpBehaviorExtension" type="MyProject.CustomBehaviorExtensionElement, MyProject, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null"/>
<add name="MyFaultHiderBehaviorExtension" type="MyProject.FaultHiderBehaviorExtensionElement, MyProject, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null"/>
</behaviorExtensions>
</extensions>
<behaviors>
<endpointBehaviors>
<behavior name="MyProject.AspNetAjaxBehavior">
<enableWebScript/>
<MyWebHttpBehaviorExtension/>
</behavior>
</endpointBehaviors>
<serviceBehaviors>
<behavior name="MyProject.AspNetAjaxBehavior">
<serviceMetadata httpGetEnabled="true" httpsGetEnabled="true"/>
<serviceDebug includeExceptionDetailInFaults="false"/>
</behavior>
</serviceBehaviors>
</behaviors>
<serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true"/>
<services>
<service name="MyProject.Api.PublicService">
<endpoint address="" behaviorConfiguration="MyProject.AspNetAjaxBehavior" bindingConfiguration="WebServicesBinding" binding="webHttpBinding" contract="MyProject.Api.PublicService"/>
</service>
</services>
<bindings>
<webHttpBinding>
<binding name="WebServicesBinding">
<security mode="None"/>
</binding>
<binding name="WebServicesBindingHttps">
<security mode="Transport"/>
</binding>
</webHttpBinding>
<basicHttpBinding>
<binding name="GatewaySoap" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered" useDefaultWebProxy="true">
<readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384"/>
<security mode="None">
<transport clientCredentialType="None" proxyCredentialType="None" realm=""/>
<message clientCredentialType="UserName" algorithmSuite="Default"/>
</security>
</binding>
</basicHttpBinding>
</bindings>
</system.serviceModel>
<system.codedom>
<compilers>
<compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.VisualBasic.VBCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" warningLevel="4">
<providerOption name="CompilerVersion" value="v3.5"/>
<providerOption name="OptionInfer" value="true"/>
<providerOption name="WarnAsError" value="false"/>
</compiler>
</compilers>
</system.codedom>
<runtime>
<assemblyBinding appliesTo="v2.0.50727" xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="System.Web.Extensions" publicKeyToken="31bf3856ad364e35"/>
<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/>
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.Extensions.Design" publicKeyToken="31bf3856ad364e35"/>
<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/>
</dependentAssembly>
</assemblyBinding>
</runtime>
</configuration>
I have double-checked the AXD handler in the applicationhost.config for IIS Express. It appears that I have .NET 2.0 AXD handlers. (But I have little expertise in interpreting these.)
<handlers accessPolicy="Read, Script">
<!-- non-AXD handlers snipped -->
<add name="AXD-ISAPI-4.0_64bit" path="*.axd" verb="GET,HEAD,POST,DEBUG" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness64" responseBufferLimit="0" />
<add name="AXD-ISAPI-4.0_32bit" path="*.axd" verb="GET,HEAD,POST,DEBUG" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness32" responseBufferLimit="0" />
<add name="TraceHandler-Integrated-4.0" path="trace.axd" verb="GET,HEAD,POST,DEBUG" type="System.Web.Handlers.TraceHandler" preCondition="integratedMode,runtimeVersionv4.0" />
<add name="WebAdminHandler-Integrated-4.0" path="WebAdmin.axd" verb="GET,DEBUG" type="System.Web.Handlers.WebAdminHandler" preCondition="integratedMode,runtimeVersionv4.0" />
<add name="AssemblyResourceLoader-Integrated-4.0" path="WebResource.axd" verb="GET,DEBUG" type="System.Web.Handlers.AssemblyResourceLoader" preCondition="integratedMode,runtimeVersionv4.0" />
<add name="ScriptHandlerFactoryAppServices-Integrated-4.0" path="*_AppService.axd" verb="*" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" preCondition="integratedMode,runtimeVersionv4.0" />
<add name="ScriptResourceIntegrated-4.0" path="*ScriptResource.axd" verb="GET,HEAD" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" preCondition="integratedMode,runtimeVersionv4.0" />
<add name="TraceHandler-Integrated" path="trace.axd" verb="GET,HEAD,POST,DEBUG" type="System.Web.Handlers.TraceHandler" preCondition="integratedMode,runtimeVersionv2.0" />
<add name="WebAdminHandler-Integrated" path="WebAdmin.axd" verb="GET,DEBUG" type="System.Web.Handlers.WebAdminHandler" preCondition="integratedMode,runtimeVersionv2.0" />
<add name="AssemblyResourceLoader-Integrated" path="WebResource.axd" verb="GET,DEBUG" type="System.Web.Handlers.AssemblyResourceLoader" preCondition="integratedMode,runtimeVersionv2.0" />
<add name="AXD-ISAPI-2.0" path="*.axd" verb="GET,HEAD,POST,DEBUG" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework\v2.0.50727\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv2.0,bitness32" responseBufferLimit="0" />
<add name="AXD-ISAPI-2.0-64" path="*.axd" verb="GET,HEAD,POST,DEBUG" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework64\v2.0.50727\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv2.0,bitness64" responseBufferLimit="0" />
</handlers>
As the site is configured to run in .NET 2.0 (or possibly 3.5) you need to install the AJAX control toolkit DLLs in your bin, as they are likely installed to the GAC on the production server, which is why it works there. In order for it to be able to load the 2.0 DLLs you'll need to either install the DLLs to the GAC on your machine or include them in the bin directory. This answer should help with that.
Fixed. The problem was not with my web.config. In fact, I could not find any problem with any of my files or code. Ultimately, I had to recreate the project and copy my files in. Specifically, in order:
Create new empty ASP.NET project. (Visual Studio did this in 4.5 by default.)
Change the target framework to version 3.5.
Copy the code files from the current project.
In the project properties of the new project, make sure that the assembly name and root namespace of the new project match that of the existing project.
Add the necessary references in the new project.
Run the new project in debug mode, to test it, confirming that all works as it should.
Copy everything back, overwriting the old project, with the following caveats:
There is no need to overwrite the old solution (in my situation, anyway).
Be sure to overwrite the old VS proj file, and the bin folder.
I am using Git for source control, so it will automatically pick up any files that are new/different, and ignore others.
In my case, there are two possibilities (that I can think of) for the source of the problem. I don't know which is the real cause:
I was missing /My Project/MyExtensions/MyWebExtension.vb.
Something in the vsproj file itself.
I am having an issue preventing web.config inheritance in IIS 7. I have a .NET 3.5 application that is a child application to a .NET 4.0 application in IIS 7. I am getting the dreaded error:
The configuration section 'system.web.extensions' cannot be read because it is missing a section declaration
I have tried to wrap the entire system.web element in the parent web.config in a location tag with inheritInChildApplications set to false and the allowOverRide set to true as shown below:
<location path="." inheritInChildApplications="false" allowOverRide="true">
<system.web>
.....
</system.web>
However no matter what I have tried I have not been able to get any sort of change to the behavior of the child application. Someone please help.
EDIT:
Here is the entire web.config:
<configSections>
<section name="AppConfig" type="WebCommon.WebAppConfig, WebCommon" />
<section name="exceptionManagement" type="Microsoft.ApplicationBlocks.ExceptionManagement.ExceptionManagerSectionHandler,Microsoft.ApplicationBlocks.ExceptionManagement" />
<section name="infragistics.web" type="System.Configuration.SingleTagSectionHandler,System, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
<sectionGroup name="applicationSettings" type="System.Configuration.ApplicationSettingsGroup, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
<section name="appt.My.MySettings" type="System.Configuration.ClientSettingsSection, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</sectionGroup>
</configSections>
<system.web.extensions>
<scripting>
<webServices>
<jsonSerialization maxJsonLength="500000">
</jsonSerialization>
</webServices>
</scripting>
</system.web.extensions>
<system.webServer>
<validation validateIntegratedModeConfiguration="false" />
<modules>
<remove name="ScriptModule" />
<add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
</modules>
<handlers>
<remove name="AboMapperCustom-475393366" />
<remove name="AboMapperCustom-475393336" />
<remove name="AboMapperCustom-475393333" />
<remove name="WebServiceHandlerFactory-ISAPI-2.0" />
<add name="ar_rpx-integrated" path="*.rpx" verb="*" type="DataDynamics.ActiveReports.Web.Handlers.RpxHandler" resourceType="File" preCondition="integratedMode" />
<add name="ar_activereport-integrated" path="*.ActiveReport" verb="*" type="DataDynamics.ActiveReports.Web.Handlers.CompiledReportHandler" resourceType="Unspecified" preCondition="integratedMode" />
<add name="ar_arcacheitem-integrated" path="*.ArCacheItem" verb="*" type="DataDynamics.ActiveReports.Web.Handlers.WebCacheAccessHandler" resourceType="Unspecified" preCondition="integratedMode" />
<add name="Telerik_Web_UI_WebResource_axd" verb="*" preCondition="integratedMode" path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" />
</handlers>
<defaultDocument>
<files>
<remove value="Default.htm" />
<remove value="Default.aspx" />
</files>
</defaultDocument>
<httpWarmup>
<requests>
<add requestUrl="\login.aspx" allowedResponseCodes="200-399" warmupContext="" sendMode="Asynchronous" />
</requests>
</httpWarmup>
</system.webServer>
<connectionStrings>
.....
</connectionStrings>
<appSettings>
.....
</appSettings>
<exceptionManagement>
<!-- <publisher mode="on" assembly="WebCommon"
type="WebCommon.CustomExceptionPublishers.ExceptionPublisherToFile"
fileName="c:\CustomPub.log"/>
-->
<publisher mode="on" assembly="WebCommon" type="WebCommon.CustomExceptionPublishers.ExceptionPublisherToDB" fileName="c:\CustomPub2.log" />
</exceptionManagement>
<AppConfig>
.....
</AppConfig>
<system.web>
<roleManager enabled="true">
<providers>
<remove name="AspNetSqlRoleProvider" />
<add connectionStringName="appt.My.MySettings.ConnectionString" applicationName="/" name="AspNetSqlRoleProvider" type="System.Web.Security.SqlRoleProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
<remove name="AspNetWindowsTokenRoleProvider" />
</providers>
</roleManager>
<webParts>
<personalization defaultProvider="AspNetSqlPersonalizationProvider">
<providers>
<remove name="AspNetSqlPersonalizationProvider" />
<add name="AspNetSqlPersonalizationProvider" type="System.Web.UI.WebControls.WebParts.SqlPersonalizationProvider" connectionStringName="appt.My.MySettings.ConnionString" applicationName="/" />
</providers>
</personalization>
</webParts>
<xhtmlConformance />
<!-- DYNAMIC DEBUG COMPILATION
Set compilation debug="true" to insert debugging symbols (.pdb information)
into the compiled page. Because this creates a larger file that executes
more slowly, you should set this value to true only when debugging and to
false at all other times. For more information, refer to the documentation about
debugging ASP.NET files.
-->
<compilation defaultLanguage="vb" debug="false">
<assemblies>
<add assembly="ActiveReports.Web, Version=6.2.3681.0, Culture=neutral, PublicKeyToken=CC4967777C49A3FF" />
<add assembly="ActiveReports.HtmlExport, Version=6.2.3681.0, Culture=neutral, PublicKeyToken=cc4967777c49a3ff" />
<add assembly="ActiveReports.PdfExport, Version=6.2.3681.0, Culture=neutral, PublicKeyToken=cc4967777c49a3ff" />
<add assembly="System.Data.Services, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
<add assembly="System.Data.Services.Client, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
<add assembly="System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
<add assembly="System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
<add assembly="System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
<add assembly="System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
<add assembly="System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
<add assembly="System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
<add assembly="System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
<add assembly="System.Configuration, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
<add assembly="System.Web.Services, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
<add assembly="System.DirectoryServices, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
<add assembly="System.DirectoryServices.Protocols, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
<add assembly="System.EnterpriseServices, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
<add assembly="System.ServiceProcess, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
<add assembly="System.Web.RegularExpressions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
<add assembly="System.Web.Extensions.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add assembly="System.Runtime.Serialization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
<add assembly="System.ServiceModel.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add assembly="Infragistics4.WebUI.Shared.v11.1, Version=11.1.20111.2064, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" />
<add assembly="Infragistics4.WebUI.UltraWebNavigator.v11.1, Version=11.1.20111.2064, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" />
<add assembly="Infragistics4.WebUI.WebDataInput.v11.1, Version=11.1.20111.2064, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" />
<add assembly="Infragistics4.WebUI.UltraWebGrid.v11.1, Version=11.1.20111.2064, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" />
<add assembly="Infragistics4.WebUI.WebDateChooser.v11.1, Version=11.1.20111.2064, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" />
<add assembly="Infragistics4.WebUI.UltraWebTab.v11.1, Version=11.1.20111.2064, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" />
<add assembly="Infragistics4.WebUI.UltraWebToolbar.v11.1, Version=11.1.20111.2064, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" />
<add assembly="Infragistics4.WebUI.Misc.v11.1, Version=11.1.20111.2064, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" />
<add assembly="Infragistics4.WebUI.UltraWebGrid.ExcelExport.v11.1, Version=11.1.20111.2064, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" />
<add assembly="Infragistics4.WebUI.WebCombo.v11.1, Version=11.1.20111.2064, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" />
<add assembly="Infragistics4.WebUI.UltraWebChart.v11.1, Version=11.1.20111.2064, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" />
</assemblies>
</compilation>
<!-- CUSTOM ERROR MESSAGES
Set customErrors mode="On" or "RemoteOnly" to enable custom error messages, "Off" to disable.
Add <error> tags for each of the errors you want to handle.
-->
<customErrors defaultRedirect="http://qc.somewhere.com/exception.aspx" mode="Off" />
<!-- AUTHENTICATION
This section sets the authentication policies of the application. Possible modes are "Windows",
"Forms", "Passport" and "None"
-->
<authentication mode="Forms">
<!--Keep auth timeout greater than session timeout so that
Session_OnEnd in global.asax will fire first and always kill the auth cookie
to make sure one doesn't outlast the other.
In other words, Session timeout drives the user's experience /Joe 01.25.02-->
<forms name="AUTH" path="/" loginUrl="login.aspx" protection="All" timeout="30" />
</authentication>
<machineKey validationKey="C50B3C89CB21F4F1422FF158A5B42D0E8DB8CB5CDA1742572A487D9401E3400267682B202B746511891C1BAF47F8D25C07F6C39A104696DB51F17C529AD3CABE" decryptionKey="8A9BE8FD67AF6979E7D20198CFEA50DD3D3799C77AF2B72F" validation="SHA1" />
<!-- AUTHORIZATION
This section sets the authorization policies of the application. You can allow or deny access
to application resources by user or role. Wildcards: "*" mean everyone, "?" means anonymous
(unauthenticated) users.
-->
<authorization>
<deny users="?" />
<!-- Allow all users -->
<!-- <allow users="[comma separated list of users]"
roles="[comma separated list of roles]"/>
<deny users="[comma separated list of users]"
roles="[comma separated list of roles]"/>
-->
</authorization>
<!-- APPLICATION-LEVEL TRACE LOGGING
Application-level tracing enables trace log output for every page within an application.
Set trace enabled="true" to enable application trace logging. If pageOutput="true", the
trace information will be displayed at the bottom of each page. Otherwise, you can view the
application trace log by browsing the "trace.axd" page from your web application
root.
-->
<trace enabled="false" requestLimit="10" pageOutput="true" traceMode="SortByTime" localOnly="true" />
<!-- SESSION STATE SETTINGS
By default ASP.NET uses cookies to identify which requests belong to a particular session.
If cookies are not available, a session can be tracked by adding a session identifier to the URL.
To disable cookies, set sessionState cookieless="true".
-->
<sessionState mode="InProc" stateConnectionString="tcpip=127.0.0.1:42424" sqlConnectionString="data source=127.0.0.1;user id=sa;password=" cookieless="false" timeout="2" />
<!-- PREVENT SOURCE CODE DOWNLOAD
This section sets the types of files that will not be downloaded. As well as entering
a httphandler for a file type, you must also associate that file type with the xspisapi.dll
in the App Mappings property of the web site, or the file can be downloaded.
It is recommended that you use this section to prevent your sources being downloaded.
-->
<!-- <httpHandlers>
<add verb="*" path="*.vb" type="System.Web.HttpNotFoundHandler,System.Web" />
<add verb="*" path="*.cs" type="System.Web.HttpNotFoundHandler,System.Web" />
<add verb="*" path="*.vbproj" type="System.Web.HttpNotFoundHandler,System.Web" />
<add verb="*" path="*.csproj" type="System.Web.HttpNotFoundHandler,System.Web" />
<add verb="*" path="*.webinfo" type="System.Web.HttpNotFoundHandler,System.Web" />
</httpHandlers>
-->
<!-- GLOBALIZATION - This section sets the globalization settings of the application. -->
<globalization requestEncoding="utf-8" responseEncoding="utf-8" />
<!-- ASMX is mapped to a new handler so that proxy javascripts can also be served. -->
<httpHandlers>
<add path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" validate="false" />
<remove verb="*" path="*.asmx" />
<add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false" />
<add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<!--
<add verb="*" path="*.ashx" type="System.Web.UI.SimpleHandlerFactory"/>
-->
</httpHandlers>
<httpModules>
<add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
</httpModules>
<pages theme="Default" styleSheetTheme="Default">
<controls>
<add tagPrefix="telerik" namespace="Telerik.Web.UI" assembly="Telerik.Web.UI" />
<add namespace="System.Web.UI" assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" tagPrefix="asp" />
<add tagPrefix="asp" namespace="AjaxControlToolkit" assembly="AjaxControlToolkit" />
<add tagPrefix="asp" namespace="System.Web.UI.WebControls" assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
</controls>
</pages>
</system.web>
<location path="/Feeds/RSS.aspx" inheritInChildApplications="false">
<system.web>
<authorization>
<allow users="*" />
</authorization>
</system.web>
</location>
<system.codedom>
<compilers>
<compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.VisualBasic.VBCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" warningLevel="4">
<providerOption name="CompilerVersion" value="v4.0" />
<providerOption name="OptionInfer" value="true" />
<providerOption name="WarnAsError" value="false" />
</compiler>
</compilers>
</system.codedom>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="System.Web.Extensions" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="4.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.Extensions.Design" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="4.0.0.0" />
</dependentAssembly>
</assemblyBinding>
</runtime>
<system.serviceModel>
<bindings>
<wsHttpBinding>
<binding name="LinkService" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard" maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true" allowCookies="false">
<readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384" />
<reliableSession ordered="true" inactivityTimeout="00:10:00" enabled="false" />
<security mode="None">
<transport clientCredentialType="Windows" proxyCredentialType="None" realm="" />
<message clientCredentialType="Windows" negotiateServiceCredential="true" />
</security>
</binding>
</wsHttpBinding>
</bindings>
<client>
<endpoint address="http://192.168.1.1/2011-10/LinkService.svc/link" binding="wsHttpBinding" bindingConfiguration="LinkService" contract="OnboardingLinkService.ILinkService" name="LinkService" />
</client>
</system.serviceModel>
I think you can use the <remove /> element to remove elements from the parent config.
Or just use <clear/> to clean the whole section
Actually I just tried it by myself. I didn't encounter any problem.
My environment is as follow.
Win2008R2 + IIS7.5
Site\AspNet4 --> for asp.net 4 application
Site\AspNet4\AspNet35 --> for Asp.net 3.5 application (this is a virtual folder)
all I did is just put
<location path="." inheritInChildApplications="false" allowOverride="true">
<system.web>
<compilation debug="true" targetFramework="4.0" />
</system.web>
</location>
I think there is something wrong in your web.config.
why don't you post it ?
I just switched from Classic Mode to Integrated Mode and now HttpContext doesn't seem to exist in my ASP.NET application. I can't even add a Watch to HttpContext nor to HttpContext.Current.
I'm using FluorineFX where in the Web.config a HttpModule is defined. Apparently, in IIS7 Integrated Mode, these HttpModules need to be added to the Modules section in System.WebServer. I have done this, but now I'm having this HttpContext problem...
Any idea as why this could happen?
Code is in a simple service class being called by Flex (amf).
if (HttpContext.Current.User.Identity != null)
{
...
Web.Config (I don't know how to display this properly in Stack...):
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="SubSonicService" type="SubSonic.SubSonicSection, SubSonic" requirePermission="false"/>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
<section name="dataConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSettings, Microsoft.Practices.EnterpriseLibrary.Data, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
<section name="cachingConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Caching.Configuration.CacheManagerSettings, Microsoft.Practices.EnterpriseLibrary.Caching, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
<sectionGroup name="fluorinefx">
<section name="settings" type="FluorineFx.Configuration.XmlConfigurator, FluorineFx" requirePermission="false"/>
</sectionGroup>
<sectionGroup name="spring">
<section name="context" type="Spring.Context.Support.ContextHandler, Spring.Core"/>
</sectionGroup>
</configSections>
<cachingConfiguration configSource="WebCachingConfiguration.config"/>
<dataConfiguration defaultDatabase="ConnectionString"/>
<spring>
<context>
<resource uri="~/spring/Commands.xml"/>
<resource uri="~/spring/Management.xml"/>
<resource uri="~/spring/DomainModel.xml"/>
<resource uri="~/spring/Repositories.xml"/>
<resource uri="~/spring/Services.xml"/>
<resource uri="~/spring/MsmqQueues.xml"/>
<resource uri="~/spring/MsmqMessageQueueTemplates.xml"/>
<resource uri="~/spring/Jobs.xml"/>
</context>
</spring>
<log4net configSource="WebLog4Net.config"/>
<connectionStrings configSource="WebConnectionString.config"/>
<appSettings configSource="WebAppSettings.config"/>
<fluorinefx>
<settings configSource="WebFluorineFX.settings.config"/>
</fluorinefx>
<system.web>
<globalization culture="nl-BE"/>
<customErrors mode="RemoteOnly"/>
<compilation debug="true">
<assemblies>
<add assembly="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
<add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add assembly="System.Data.DataSetExtensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
<add assembly="System.Xml.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
<add assembly="System.Transactions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
<add assembly="System.Messaging, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/></assemblies>
</compilation>
<authorization>
<allow users="*"/>
</authorization>
<!-- ignored when anonymous authentication is enabled in IIS -->
<authentication mode="Windows"/>
<identity impersonate="false"/>
<httpRuntime maxRequestLength="100000" executionTimeout="1800"/>
<caching>
<outputCache enableOutputCache="true"/>
<outputCacheSettings>
<outputCacheProfiles>
<add duration="500000" enabled="true" varyByParam="hashCode;thumb" name="AssetCacheProfile" noStore="false"/>
</outputCacheProfiles>
</outputCacheSettings>
</caching>
<pages>
<controls>
<add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add tagPrefix="asp" namespace="System.Web.UI.WebControls" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</controls>
</pages>
<sessionState timeout="20"/>
</system.web>
<system.codedom>
<compilers>
<compiler language="c#;cs;csharp" extension=".cs" warningLevel="4" type="Microsoft.CSharp.CSharpCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
<providerOption name="CompilerVersion" value="v3.5"/>
<providerOption name="WarnAsError" value="false"/>
</compiler>
</compilers>
</system.codedom>
<system.webServer>
<modules>
<add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add name="FluorineGateway" type="FluorineFx.FluorineGateway, FluorineFx"/>
</modules>
<handlers>
<remove name="WebServiceHandlerFactory-Integrated" />
<remove name="ScriptHandlerFactory" />
<remove name="ScriptHandlerFactoryAppServices" />
<remove name="ScriptResource" />
<add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode"
type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode"
type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<!-- Edumatic 3 Custom HttpHandlers -->
<add name="UploadUsers.aspx_*" path="UploadUsers.aspx" verb="*"
type="Edu3.Core.HttpHandler.UploadUsersHttpHandler, Edu3.Core"
preCondition="integratedMode,runtimeVersionv2.0" />
<add name="UploadItems.aspx_*" path="UploadItems.aspx" verb="*"
type="Edu3.Core.HttpHandler.UploadItemsHttpHandler, Edu3.Core"
preCondition="integratedMode,runtimeVersionv2.0" />
<add name="UploadBinaryAssetFile.aspx_*" path="UploadBinaryAssetFile.aspx" verb="*"
type="Edu3.Core.HttpHandler.UploadBinaryAssetFileHttpHandler, Edu3.Core"
preCondition="integratedMode,runtimeVersionv2.0" />
<add name="ExportSession.aspx_*" path="ExportSession.aspx" verb="*"
type="Edu3.Core.HttpHandler.ExportSessionHttpHandler, Edu3.Core"
preCondition="integratedMode,runtimeVersionv2.0" />
<add name="ExportSessions.aspx_*" path="ExportSessions.aspx" verb="*"
type="Edu3.Core.HttpHandler.ExportSessionsHttpHandler, Edu3.Core"
preCondition="integratedMode,runtimeVersionv2.0" />
<add name="ValidateSessions.aspx_*" path="ValidateSessions.aspx" verb="*"
type="Edu3.Core.HttpHandler.ValidateSessionsHttpHandler, Edu3.Core"
preCondition="integratedMode,runtimeVersionv2.0"/>
<add name="ScriptResource" verb="GET,HEAD" path="ScriptResource.axd" preCondition="integratedMode" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
</handlers>
<caching>
<profiles>
<add extension=".swf" policy="CacheForTimePeriod" kernelCachePolicy="CacheForTimePeriod" duration="08:00:00" />
<add extension=".flv" policy="CacheForTimePeriod" kernelCachePolicy="CacheForTimePeriod" duration="08:00:00" />
<add extension=".gif" policy="CacheForTimePeriod" kernelCachePolicy="CacheForTimePeriod" duration="08:00:00" />
<add extension=".png" policy="CacheForTimePeriod" kernelCachePolicy="CacheForTimePeriod" duration="08:00:00" />
<add extension=".mp3" policy="CacheForTimePeriod" kernelCachePolicy="CacheForTimePeriod" duration="08:00:00" />
<add extension=".jpeg" policy="CacheForTimePeriod" kernelCachePolicy="CacheForTimePeriod" duration="08:00:00" />
<add extension=".jpg" policy="CacheForTimePeriod" kernelCachePolicy="CacheForTimePeriod" duration="08:00:00" />
</profiles>
</caching>
<urlCompression doStaticCompression="true" doDynamicCompression="true" />
</system.webServer>
<!-- ************************************************************************* -->
<!-- Runtime Section -->
<!-- Telerik needs this runtime declaration and maybe some of our custom pages -->
<!-- ************************************************************************* -->
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="System.Web.Extensions" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.Extensions.Design" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0" />
</dependentAssembly>
</assemblyBinding>
</runtime>
</configuration>
If you are trying to access it from Application_Start there has been a architectural change that prevents this: IIS 7 Application_Start changes.
AFAIK it should exist everywhere else still.
I have a reportviewer control that works fine locally and on a iis 6.0 box, but when deployed to the IIS 7 webserver, the control has broken images. The report does return data but the top bar has broken images and buttons.
Using Fiddler I see that the images requests are returning a 404 or 500 error. I got the 500 after changing some HTTP handler stuff.
There is a lot of stuff on the web about this error and I have tried them all but w/ no luck.
Things I have checked
Installed reportViewer 9.0 on the new iis 7 server.
Verified the installed dlls in the GAC.
Added the new http handlers to the web.config (see web.config below). Tried manualy editing the web.config and adding the handler in via IIS 7
I have tried running the application in classic mode vs integrated and it still doesn't work (some people reported have success running in classic mode).
Another note is that my broken images look a little different compaired to reports of other users on the web. Not sure if it is just a browser difference or what..
My Error:
(source: ggpht.com)
This is what other people are reporting
(source: msdn.com)
Web.Config
<?xml version="1.0"?>
</appSettings>
<connectionStrings>
</connectionStrings>
<system.web>
<!--
Set compilation debug="true" to insert debugging
symbols into the compiled page. Because this
affects performance, set this value to true only
during development.
--><compilation debug="true" strict="false" explicit="true">
<assemblies>
<add assembly="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
<add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add assembly="System.Data.DataSetExtensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
<add assembly="System.Xml.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
<add assembly="System.Data.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
<add assembly="LinqDataAccessLayer, Version=28.0.0.0, Culture=neutral, PublicKeyToken=62bfd269dc26409d"/>
<add assembly="CrystalDecisions.CrystalReports.Engine, Version=10.5.3700.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>
<add assembly="CrystalDecisions.ReportSource, Version=10.5.3700.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>
<add assembly="CrystalDecisions.Shared, Version=10.5.3700.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>
<add assembly="CrystalDecisions.Web, Version=10.5.3700.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>
<add assembly="CrystalDecisions.ReportAppServer.ClientDoc, Version=10.5.3700.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>
<add assembly="CrystalDecisions.Enterprise.Framework, Version=10.5.3700.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>
<add assembly="CrystalDecisions.Enterprise.InfoStore, Version=10.5.3700.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>
<add assembly="Microsoft.ReportViewer.WebForms, Version=9.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
<add assembly="Microsoft.ReportViewer.Common, Version=9.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
</assemblies>
<buildProviders>
<add extension=".rdlc" type="Microsoft.Reporting.RdlBuildProvider, Microsoft.ReportViewer.Common, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
</buildProviders>
</compilation>
<pages theme="myTheme">
<namespaces>
<clear/>
<add namespace="System"/>
<add namespace="System.Collections"/>
<add namespace="System.Collections.Generic"/>
<add namespace="System.Collections.Specialized"/>
<add namespace="System.Configuration"/>
<add namespace="System.Text"/>
<add namespace="System.Text.RegularExpressions"/>
<add namespace="System.Linq"/>
<add namespace="System.Xml.Linq"/>
<add namespace="System.Web"/>
<add namespace="System.Web.Caching"/>
<add namespace="System.Web.SessionState"/>
<add namespace="System.Web.Security"/>
<add namespace="System.Web.Profile"/>
<add namespace="System.Web.UI"/>
<add namespace="System.Web.UI.WebControls"/>
<add namespace="System.Web.UI.WebControls.WebParts"/>
<add namespace="System.Web.UI.HtmlControls"/>
</namespaces>
<controls>
<add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add tagPrefix="asp" namespace="System.Web.UI.WebControls" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add tagPrefix="telerik" namespace="Telerik.Web.UI" assembly="Telerik.Web.UI"/>
<add tagPrefix="telerik" namespace="Telerik.Charting" assembly="Telerik.Web.UI"/>
</controls>
</pages>
<!--
The <authentication> section enables configuration
of the security authentication mode used by
ASP.NET to identify an incoming user.
-->
<!--
The <authentication> section enables configuration
of the security authentication mode used by
ASP.NET to identify an incoming user.
-->
<authentication mode="Windows"/>
<!--
The <customErrors> section enables configuration
of what to do if/when an unhandled error occurs
during the execution of a request. Specifically,
it enables developers to configure html error pages
to be displayed in place of a error stack trace.
<customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
<error statusCode="403" redirect="NoAccess.htm" />
<error statusCode="404" redirect="FileNotFound.htm" />
</customErrors>
-->
<!--
The <customErrors> section enables configuration
of what to do if/when an unhandled error occurs
during the execution of a request. Specifically,
it enables developers to configure html error pages
to be displayed in place of a error stack trace.
<customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
<error statusCode="403" redirect="NoAccess.htm" />
<error statusCode="404" redirect="FileNotFound.htm" />
</customErrors>
-->
<customErrors mode="Off"/>
<httpHandlers>
<remove verb="*" path="*.asmx"/>
<add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false"/>
<add path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" validate="false"/>
<add path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" validate="false"/>
<add path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" validate="false"/>
<add path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" validate="false"/>
<add path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" validate="false"/>
<add path="Reserved.ReportViewerWebControl.axd" verb="*" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" validate="false"/>
<add verb="GET" path="CrystalImageHandler.aspx" type="CrystalDecisions.Web.CrystalImageHandler, CrystalDecisions.Web, Version=10.5.3700.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>
</httpHandlers>
<httpModules>
<add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</httpModules>
</system.web>
<system.codedom>
<compilers>
<compiler language="c#;cs;csharp" extension=".cs" warningLevel="4" type="Microsoft.CSharp.CSharpCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
<providerOption name="CompilerVersion" value="v3.5"/>
<providerOption name="WarnAsError" value="false"/>
</compiler>
<compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" warningLevel="4" type="Microsoft.VisualBasic.VBCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
<providerOption name="CompilerVersion" value="v3.5"/>
<providerOption name="OptionInfer" value="true"/>
<providerOption name="WarnAsError" value="false"/>
</compiler>
</compilers>
</system.codedom>
<!--
The system.webServer section is required for running ASP.NET AJAX under Internet
Information Services 7.0. It is not necessary for previous version of IIS.
-->
<system.webServer>
<validation validateIntegratedModeConfiguration="false"/>
<modules runAllManagedModulesForAllRequests="true">
<remove name="ScriptModule"/>
<add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</modules>
<handlers>
<remove name="WebServiceHandlerFactory-Integrated"/>
<remove name="ScriptHandlerFactory"/>
<remove name="ScriptHandlerFactoryAppServices"/>
<remove name="ScriptResource"/>
<remove name="ChartImage_axd"/>
<remove name="Telerik_Web_UI_SpellCheckHandler_axd"/>
<remove name="Telerik_Web_UI_DialogHandler_aspx"/>
<remove name="Telerik_RadUploadProgressHandler_ashx"/>
<remove name="Telerik_Web_UI_WebResource_axd"/><add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add name="ScriptResource" preCondition="integratedMode" verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add name="ChartImage_axd" path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" preCondition="integratedMode,runtimeVersionv2.0"/>
<add name="Telerik_Web_UI_SpellCheckHandler_axd" path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" preCondition="integratedMode,runtimeVersionv2.0"/>
<add name="Telerik_Web_UI_DialogHandler_aspx" path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" preCondition="integratedMode,runtimeVersionv2.0"/>
<add name="Telerik_RadUploadProgressHandler_ashx" path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" preCondition="integratedMode,runtimeVersionv2.0"/>
<add name="Telerik_Web_UI_WebResource_axd" path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" preCondition="integratedMode,runtimeVersionv2.0"/>
<add name="CrystalImageHandler.aspx_GET" verb="GET" path="CrystalImageHandler.aspx" type="CrystalDecisions.Web.CrystalImageHandler, CrystalDecisions.Web, Version=10.5.3700.0, Culture=neutral, PublicKeyToken=692fbea5521e1304" preCondition="integratedMode"/>
<add name="ReportViewerWebControl" path="Reserved.ReportViewerWebControl.axd" verb="*" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
<add name="Reserved-ReportViewerWebControl-axd" path="Reserved.ReportViewerWebControl.axd" verb="*" type="Microsoft.Reporting.WebForms.HttpHandler" resourceType="Unspecified"/>
</handlers>
</system.webServer>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="System.Web.Extensions" publicKeyToken="31bf3856ad364e35"/>
<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/>
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.Extensions.Design" publicKeyToken="31bf3856ad364e35"/>
<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/>
</dependentAssembly>
</assemblyBinding>
</runtime>
I actually fixed this issue by coping some of the asp_client files from the root to my specific web application.
Example:
Take this content:
C:\inetpub\wwwroot\aspnet_client\system_web\2_0_50727\CrystalReportWebFormViewer4
And copy to here:
C:\inetpub\wwwroot\WebAppFolderName\aspnet_client\system_web\2_0_50727\CrystalReportWebFormViewer4
From your trace, it looks like you are using Crystal Reports. You may need to install the Crystal Reports runtime on your server.
http://resources.businessobjects.com/support/additional_downloads/runtime.asp
--update--
try this handler instead
<add verb="GET" path="CrystalImageHandler.aspx" type="CrystalDecisions.Web.CrystalImageHandler,
CrystalDecisions.Web, Version=11.5.3700.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>