ASP.NET: Errors not viewable despite proper configuration - asp.net

I'm having the classic (dare I say typical?) error on the ASP.NET production server, which tells me that I can't view errors. Below the error displayed below, are things I've already tried.
In IIS Manager (6.0), the application is located under one of the web sites in "Web Sites". It is indeed a web application, as opposed to a virtual directory (it has that gear icon).
When trying to view the error from the localhost (i.e. the server itself), it doesn't find the application on its path, even though the root web site works just fine from localhost. It is clearly not a firewall issue because first of all, the firewall is turned off, and second because the root web site works fine from localhost. Heck, I even tried connecting through telnet and that worked fine and dandy too, so it is most certainly and very clearly not a firewall issue.
Basically, I just need to view the error at all. I won't have to fix this problem if I can just see the error and fix it, because obviously there is something wrong in the code itself... I just don't know what, because IIS/.NET won't tell me.
Runtime Error
Description: An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed remotely (for security reasons). It could, however, be viewed by browsers running on the local server machine.
Details: To enable the details of this specific error message to be viewable on remote machines, please create a tag within a "web.config" configuration file located in the root directory of the current web application. This tag should then have its "mode" attribute set to "Off".
So what I've already tried is what the error message itself suggests by setting the customErrors thing to "Off". In fact, it always was on "Off" so I didn't have to change anything. I've made sure that the web.config XML is valid.
Another common reason for this error is that the .NET run-time is set to version 1.1, not 2.0. I've also made sure that this is correctly configured to 2.0.
I'm running it in an independent application pool, meaning that there are no other applications at all, much less 1.1 applications, on the same application pool.
I've made sure that EVERYONE can do ANYTHING to the files and directories in the application itself. I understand the security ramifications here, I'm just trying to get it working at all, and then I'll constrain the access rights afterward, one step at a time. But in any case, everyone can read those files.
Any help deeply appreciated. Thank you in advance.

The error is a .NET framework error so it finds the app, but there is a configuration error. What you could do is add some event logging code in APplication_Error handler in global.asax to trap these errors, or turn on health monitoring (<healthMonitoring enabled="true" />), which by default will log ASP.NET framework errors to the event log.
HTH.

Never got this working until I changed the application from a "sub-application" (I don't know the proper terminology) to an independent website with its own hostname. ASP.NET works in mysterious ways.

Related

set Default.html as start page in Web application

I had played down with my host configurations to the point that I can't revert back! I just want to be able to run it from my own visual studio, so I can debug some javascript and don't care if it is not running on Local IIS. I have web application in VS 2013 (Proj1) that I want to add a default.html page to. I set it as the start page, but when running the app, I keep getting the error:
HTTP Error 500.19 - Internal Server Error The requested page cannot be
accessed because the related configuration data for the page is
invalid.
Luckily, this is my own personal machine and I don't mind resetting its IIS or changing its apps configurations. I've tried the following:
I had initially setup my web application via VS as SSL Enabled = true, but now I am trying to reset, so my project properties look like this:
Even though I don't care about IIS setup, I still looked into my C:\Windows\System32\inetsrv\Config\applicationHost.config file, but looked fine
looked at my web.config, but nothing stands out
I think the process of setting up the SSL is the culprit. Is there anywhere else I should look? I just want to be able to run a simple Default.html
I had a problem very similar to this before in the past. This is what I did to solve it.
Try to debug a very basic page with nothing on it (Make sure that works)
Then start building the page back up.
For me it was when I added "Custom Controls" back in, when I removed those controls from the page everything worked.

IIS 7.5 and Razor Site: 500 errors for CSS and JS

For some reason, when I deploy my Razor MVC web site to my Windows 2008 R2 server, I'm getting 500 internal server errors for all CSS and JS. I'm not sure why, because I've done the following:
Enabled static content in IIS
Enabled anonymous access, with the default ID being the application pool identity and given that identity read/write permission to the folders
Ensured my static content handler was setup correctly
What other problems could it be? How can I even debug this to see what the actual error is? Even though I have an Application_Error handler, nothing is getting logged. And IIS logs doesn't give me the error info?
Thanks.
Mime-Types were my trouble
I had the same problem. My css and js was not delivered. Server says internal error.
I found out that i added the mimetype for mp4 in the global settings of the iis and also added the mime type in one of my websites as well.
That was a problem. This mime-type can only exist in the website or global, not both.
I deleted tehe global mimetype and everything worked like it should be.
Hope to help some guys of you.
Just found, that I've added to web.config *.woff MIME for IIS 7.5, so when deploying on IIS8, it's causes static files error. After removing that from web.config everything is fine.
I got 500 errors because I added this below to my web.config. After I removed it, I got passed the error.
<staticContent>
<mimeMap fileExtension=".svg" mimeType="image/svg+xml" />
</staticContent>
To rule out one basic permissions situation, try this:
Select your web site and go into Basic Settings.
Take note of which application pool your site is running under.
Exit out of there and select the Application Pools node.
Find the application pool for your site, and take note of which identity (account) that application pool is running under.
If the account is a specific user identity -- in other words, if it's not a built-in account (such as ApplicationPoolIdentity, Network Service, Local System, etc) then:
Launch your Local Users and Groups.
Find and open the local IIS_IUSRS group.
If the account in question is not a member of the group, add it.
Reinstalling IIS fixed the problem.
If you are on your local server and taking this error, please check if you have any missing packages. Catch errors in global.asax and if neccessary reload all packages with;
Update-Package -reinstall
in Package manager console.
Hope it helps.

HTTP Error 403.14 - Forbidden Error when accessing website

So I have all the updated code, the entire solution builds. It works on everyone else's machine, however when I try and access localhost/extranet on my machine, it gives me this error:
HTTP Error 403.14 - Forbidden
Detail Error Info:
Module DirectoryListingModule
Notification ExecuteRequestHandler
Handler 0x00000000
Requested URL http://localhost:80/extranet/
Physical Path C:\svn\K2\trunk\appteam\web\Chatham.Web.UI.Extranet\
Logon Method Anonymous
Logon User Anonymous
Now I tried going into IIS7, and enabling directory browsing, this removed the error, but still didn't bring up my website. I also tried going in and disabling the default document, re-enabling it, everything, nothing worked. I've also restarted IIS a few times to no avail.
Any ideas?
It sounds like your IIS is not processing the routing rules for your application and is trying to find a default.aspx, index.htm, etc. Since it cannot, it is wanting to display the directory listings (which is why you were getting the 404.14).
I just checked my dev setup and I think that your AppPool has to be set on Integrated as opposed to Classic on the Managed Pipeline for the AppPool. I have ran into this before, there may be ways to use the Classic Pipeline, but this would/should be the quickest way to resolve your issue. To check/change the pipeline mode, click on Application Pools from the menu on the left side of IIS, find your AppPool and look in the managed pipeline column. If it is set to Classic -> Right click the AppPool, choose basic settings, then change the dropdown from Classic to Integrated.
If I am incorrect, someone please feel free to correct me on this in the comments.
Edit - Just to add, you can run an MVC app in the Classic Pipeline mode, but you have to do the IIS 6 tricks to get it to work properly. Mainly, you need to turn on wildcard script mapping for MVC to work in Classic mode, If not it expects an .aspx file (or similar) to exist for it to handle the execution pipeline over to .NET from IIS.
Causes this error is removed Global.asax file from your root directory of your site.
To solve this problem add a Global.asax file to your project.
See here: How to add Global.asax file to ASP.NET MVC4 project
In IIS, you need to find out which app pool your application is running from. Just right click the web application under Sites>Manage Web Site>Advanced Settings. The first property should be the app pool.
Now, click Application Pools. You should see a column called "Identity". Add that user to the ACL of the C:\svn\K2\trunk\appteam\web\Chatham.Web.UI.Extranet\ directory. If it just says 'ApplicationPoolIdentity', it can be a little tricky figuring out the user. If it's just running under DefaultAppPool, you can use IIS AppPool\DefaultAppPool.
My solution was because I didn't have ASP.NET installed via "Turn Windows Features on and Off" so it was simple. I figured it out by enabling directory browser and trying to go to my views folder which then gave a more descriptive answer and pretty much said that there was a problem with a module because ASP.NET is not properly installed. It then dawned on my to go and install it.
Change the 'start page' by right click on the page and select 'Set as Start Page' that you want to open first when the web application starts first. This might solve your problem. :)
Also make sure in IIS Application Pool settings that Enabled 32-bit Applications under Advanced Settings is set to FALSE. I spent hours trying to fix this and that was my issue. Windows Server 2012 IIS 8.5
I solved this problem by setting exact .net framework. My website was using v4.0 version of .net.
Workaround to handle the problem:
Open command line as an administrator
Go to directory "C:\Windows\Microsoft.NET\Framework\v4.0.30319"
Execute the following: aspnet_regiis.exe -i
Open IIS and change Pipeline Mode of Your application to Integrated
Hope this helps
In my case the HTTP Redirection feature was missing on the server (with IIS 10).
Adding the feature resolved the issue and the site started to load fine.

500 - Internal server error for ASPX page

I have created one test.aspx and my local machine it is working fine. Once I upload the same to server the page is not working. It's showing
500 - Internal server error. There is a problem with the resource you
are looking for, and it cannot be displayed.
It is impossible to help you without getting more info about the IIS configuration on your local machine and the server.
However, here's a quick stab of some things you should look at:
Check if Asp.net is installed on the server.
Make sure your app is targeting the proper .Net version that is on the server.
Check if all the assemblies your code is using are deployed correctly on the IIS server.
Add some exception handling and error logging to your code.
In particular, I'd venture to make a wild guess that your page is using some code that requires the IIS7 integrated pipeline and your server is either running IIS6 or is running IIS7 in classic mode. Though this is a stab in the dark and could turn out to be completely wrong. :-)
500 server errors are as useful as saying 'something broke'. They are the result of literally any exception you code throws plus anything else IIS croaks on. From your error msg, it sounds like an IIS config issue but it could still be your code. attaching a debugger to it would eliminate that possibility.
If you haven't looked at the server event log you can see if it registered anything.
There are a number of things that you can do to try to get a better, more specific exception. One way I try to diagnose them is to connect a remote debugger so I can see what's going on. If you have access to do so, I'd go that route.
You will need admin access to the server to install the Visual Studio remote debugging client (I'm assuming this is a .net app).
Another thing that can help are try/catch blocks and logging to a file or the event log--but have have to change your app most likely to implement that.
You have probably forgotten to upload the associated .dll. Have you tried right clicking on the project and using the publish feature?
If you are using IE, then you also need to turn off the "Show friendly error messages" option in Tools - Options - Advanced settings so that you get more details.
You may also need to change the web.config file so that error message details are shown, see the CustomErrors tag.

Handler not yet determined error

I don’t know anything about deploying a website, so I probably made some stupid mistake.
Anyways, I opened IIS 7 manager, created new virtual directory ( via Add Application ) and pointed it to physical directory where Visual studio saved my Web project. But when I tried to request an .aspx page, browser reported the following error (I won’t post the whole error, but just the interesting bits):
Handler: Not yet determined
Config Error: Cannot read configuration file due to insufficient permissions
Logon User: Not yet determined
A) why is handler not yet determined? As far as I know, IIS7 does have Asp.Net handler registered?!
B) Why wouldn’t IIS have sufficient permissions? Does that mean I should give IIS higher privileges? Or does Asp.Net runtime have insufficient permissions?
C) Could the error also be due to the fact that perhaps it expected the user to authenticate itself? I’m assuming this due to Logon user not yet being determined?
D) And finally, any ideas how to make it work?
thanx
error code:0x8007000d
I started playing with permissions and all the stuff about access issues to web.config or applicationhost.config anyway those did not change the error.
while I was playing with my web.config I deleted rewrite tags from my config file and error changed. then I installed "web platform installer" and installed url rewrite module for IIS and played with some configuration now my site is working. it took about one day to find out this issue I hope it helps someone.
Does the identity of your IIS application pool have sufficient rights to access the folder that is hosting your site?

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