Do I need a web config file to run an asp.net hello world on IIS 7? - asp.net

I have uploaded a simple hello world on my IIS server 7 (shared hosting). It doesn't work. Is it necessary to add a web config and what's the minimum in that case ?
Thanks.
Error says:
Server Application Unavailable
The web application you are attempting
to access on this web server is
currently unavailable. Please hit the
"Refresh" button in your web browser
to retry your request.
Here's the script, very basic :)
<%# Page Language="VB" %>
<html>
<head>
<title>ASP.NET Hello World</title>
</head>
<body bgcolor="#FFFFFF">
<p><%= "Hello World!" %></p>
</body>
</html>

A individual, site-specific web.config is not required to be present in order to get a basic "Hello World" site up and running in IIS7, however, it's rather unusual not to have one.
IIS7, unlike previous versions, effectively has the ASP.NET worker process component "built-in". This allows web.config files to specify configuration of not only your ASP.NET site itself, but also how the IIS server hosting your site should be configured (i.e. you can specify (for example) the default document type in an ASP.NET web.config file).
If you don't specify an individual web.config for your ASP.NET site, the IIS7 server will use the "default" web.config, which is usually located in your "windows" folder within the system-wide configuration of the .NET framework itself.
This article:
Working With Configuration Files in IIS 7
from the MSDN library states:
Configuration Files
Configuration exists in a physical
directory in either server-level
configuration files or in Web.config
files. Every configuration file maps
to a specific site, application, or
virtual directory.
Server-level configuration is stored
in the following configuration files:
Machine.config. This file is located in
%windir%\Microsoft.NET\Framework\framework_version\CONFIG.
Root Web.config for the .NET Framework. This file is located in
%windir%\Microsoft.NET\Framework\framework_version\CONFIG.
ApplicationHost.config. This file is located in
%windir%\system32\inetsrv\config.
Site, application, and virtual and
physical directory configuration can
be stored in one of the following
locations:
A server-level configuration file. When configuration for a site,
application, directory, or URL is
stored in a server-level configuration
file, you must use a location tag to
specify the site, application,
directory, or URL to which the
configuration applies.
A parent-level Web.config file. When configuration for an application,
directory, or URL is stored in a
parent-level configuration file, you
must use a location tag to specify the
child at which the configuration
applies.
The Web.config file for the site, the application, or the directory.
When you configure settings for an
application, directory, or URL, the
configuration is stored in the same
directory as the site, application, or
directory. You do not need to use
location tags.
Storing configuration settings in a
parent configuration file is helpful
when:
You want to store configuration settings in a configuration file that
is accessible by only certain users or
groups. For example, the
ApplicationHost.config file is
available only to the Administrator
account and to the members of the
Administrators group on a specific
computer, as well as to domain
administrators when a computer is part
of a domain.
You want to configure a feature at the URL-level (also known as
file-level).
Also, see the following article for further information:
The new Configuration System in IIS 7
EDIT:
Regarding the specific error message that you're getting, I've seen this before on an IIS7 server, and the problem turned out to be the Application Pool that the site was set to use wasn't "running". Going into the IIS7 admin gui and starting the Application Pool cured the problem.
I have also seen this error caused wen the relevant permissions have not been set on the folder containing your website code.
See here, here, and here for further information.
Of course, since you're testing a shared hosting environment, you probably don't have access to the web server itself, and it's difficult to know exactly what you do have access to, administration-wise, through your hosting provider, but they probably have some kind of interface to set permissions on folders/files, so I'd look there first.
Failing that, you may have to include a web.config file in your "test" site as that will allow you to set configurations within IIS7 that you may otherwise have no access to.
Failing that, you may need to speak to your web host's support team.

It should be enough to inherit from machine.config. What's the exception?

I am not sure about the shared Hosting environment. But If you try to create a web application ( try ASP.Net Empty web application template) and just use Response.write("Hello World !") . it will work without any web.config.
I tried my self and it work successfully.
Only problem is that It may ask you if you wanted to debug your application then it requires to add "compilation = true" attribute in web.config.

Related

web.config application pool error after moving to new server

I have the following error after move my website from server to another server
I have already checked iis and make sure the app has an application pool and it points to the correct file path
here is a screenshot of my application pool
I even tried to add virtual directory and add application and still not working
Check siteMapFile attribute of sitemap
The possible reason behind the issue is:
When you create a new web application using visual studio.net, it automatically creates the virtual directory and configures it as an application. However, if you manually create the virtual directory and it is not configured as an application, then you will not be able to browse the application and may get the above error. The debug information you get as mentioned above, is applicable to this scenario. To resolve it, Right Click on the virtual directory - select properties and then click on "Create" next to the "Application" Label and the textbox. It will automatically create the "application" using the virtual directory's name. Now the application can be accessed.
When you have sub-directories in your application, you can have a web.config file for the sub-directory. However, there are certain properties that cannot be set in the web.config of the sub-directory such as authentication, session state (you may see that the error message shows the line number where the authentication or session-state is declared in the web.config of the sub-directory). The reason is, these settings cannot be overridden at the sub-directory level unless the sub-directory is also configured as an application (as mentioned in the above point). Mostly we have the practice of adding web.config in the sub-directory if we want to protect access to the sub-directory files (say, the directory is admin and we wish to protect the admin pages from unauthorized users). But actually, this can be achieved in the web.config at the application's root level itself, by specifying the location path tags and authorization.
in your case the site map section causing the issue. try to remove it from the config file.
You could refer this below link:
Nested ASP.NET 'application' within IIS inheriting parent config values?

Load site specific config as well as application web.config

I have a asp.net mvc application which comes with web.config. I deploy it to my Windows server 2012 with IIS 8.
I have to make some changes to the web.config because of the unique settings on the server, for instance, disable a URL rewrite rule, to name a few.
I treat my application as a open source project which shouldn't include settings specific to my server. But if I don't put the unique settings in web.config, every time I deploy the site, I have to manually edit it again.
Are there ways to resolve the problem? Is it possible for IIS to load two web.config, one from the repository, the other somewhere on the server?
I know <appsetting> has file attribute that include additional app settings, but my changes are not only app setting.

How do you check the ASP.NET sessionsState mode on a web server?

I have a ASP.NET 4.0 web application that doesn't specify the sessionState mode in any of its web.config files.
This application is running on my company's web server, which I have very limited access to. Is there any way I can check which sessionState mode my web application is running in?
I am aware that 'InProc' is the default sessionState mode in ASP.NET. But I uncertain if anyone has overwritten the root config files (machine.config or root web.config, etc) on the company's web server. Note that I don't have direct access to the server, so I need write a list of places/files to try. And obviously, I can't put in any test code in there to find out.
I also tried search in the config files where the default 'InProc' mode is specified, but I couldn't find it anywhere. Any help would be much appreciated. Thanks!
Server-level configuration is stored in the following configuration files:
Machine.config. This file is located in %windir%\Microsoft.NET\Framework\framework_version\CONFIG.
Root Web.config for the .NET Framework. This file is located in %windir%\Microsoft.NET\Framework\framework_version\CONFIG.
ApplicationHost.config. This file is located in %windir%\system32\inetsrv\config.
And finally you would want to check the Web.config of your application.
Source

The requested page cannot be accessed because the related configuration data for the page is invalid

I am getting this error when I try to run an ASP.NET application without a web.config file.
The requested page cannot be accessed because the related configuration data for the page is invalid
as I read, we can run .NET applications without web config files, but when I tried it is giving me the error. I am using iis 7 on windows 7 machine.
When I create the application virtual directory inside inetpub/wwwroot it works fine. Why doesn't the other directory location?
One reason could be the version of .NET framework (on IIS or application pool level) is different from the application one.
Another reason could be if there are modules used in your web.config which the current configuration of IIS doesn't recognize. E.g. URL rewrite or other optional modules, which you have to explicitly enable before using.
This can be a reason:
If there is no Web.config file in the
UNC directory, IIS 7.0 uses the rules
that are defined for the parent
directory. For the Web content to be
served in this scenario, the
worker-process identity must have
access to the whole content directory.
Otherwise, the Web request is
rejected.
Details here.
You need to set permission for your Website folder or copy them to wwwroot folder.
If you choose to set permission, there are two ways:
Right click on Your Website folder, or
Right click to Your Website in IIS
Then select Edit permission and Add a permission (IUSR - default iis user)

Can an ASP.NET web app run without web.config

Can my asp.net web application run without a web.config?
For argument's sake lets say that I'm not connecting to a Database or explicitly reading any
configuration information .
I have tried it out and I'm able to run a web app successfully in VS 2008 without a web.config.
This brings me to the question as to how are authentication and session modes configured now ?
The machine.config and the root web.config files ( in the framework folder) do not have any authentication/session modes configured explicitly .
Any ideas ?
Thanks.
yes we can run asp.net application without web.config file,if u r not configure any settings in web.config file then it will take machine.config file for default configurtaons.This config file will automatically installed when your application getting executed.
Because all the configuration settings will be available under MACHINE.CONFIG file by default these settings will be applied to all asp.net applications.
You'd have to read the documentation to see the defaults, which for authentication is probably windows, and session mode would be in process.
Yes, you will be able to run an ASP.NET application without a WEB.CONFIG file in its root folder.
If the application doesn’t find a WEB.CONFIG file in its root folder, then it will take MACHINE.CONFIG file for default configurations. But you will not be able to debug the application as debugging is turned off by default in MACHINE.CONFIG file.
Find more information about machine.config files over here

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