Web Application not able to run in IIS 10.0

Hello,

You need to add environment variable,,

Wondering this is got resolved?

The error HTTP Error 500.31 - Failed to load ASP.NET Core runtime typically occurs when the specified version of Microsoft.NetCore.App or Microsoft.AspNetCore.App was not found12. Here are some troubleshooting steps you can follow:

1. Check the system event log for error messages: The system event log might contain more detailed information about the error.

2. Enable logging: You can enable logging by setting stdoutLogEnabled="true" in your web.config file, which you have already done. The logs can provide more information about the error2.

3. Check the .NET Core versions: Make sure that the .NET Core versions specified in your project match the versions installed on your machine3.

4. Install the ASP.NET Core Module: If you haven’t already, make sure to install the ASP.NET Core Module4.

5. Publish as Self-Contained: A quick fix might be to publish your application as self-contained. This includes the .NET runtime with your application, so it can run even if the server does not have the correct .NET runtime installed2.

6. URL Rewrite Module: If you don’t have URL Rewrite Module installed, you will often encounter a 500.31 error. Please try to install it and reopen the IIS Management, then check it5.

Remember to always backup your files before making any changes. If none of these solutions work, please provide more information about your setup, such as the .NET Core version you’re using and the specific settings in your web.config file. 

Thanks

when i checked .csproj file , i can see framework version using is 8.0

 
    net8.0
    enable
    enable
    true
 

 
   
   
   
   
   
   
   
   
   
   
   
   
   
   
 

 windows server hosting bundle 8.0 is already there. but in IIS only v4 and No Managed Code option in my .NET CLR Version in my IIS

I have various types of runtime installed. 

Microsoft.AspNetCore.App 8.0.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.4 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 8.0.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.1 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.4 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 8.0.0 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.1 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]


will this be a issue for getting this error?

my application pool is look like this

Install the ASP.NET Core Hosting Bundle: If you haven't already, install the ASP.NET Core Hosting Bundle. This will ensure that IIS is properly configured to host ASP.NET Core applications. You can download it from the .NET Core Hosting Bundle page.

Hi Prasad Raveendran,

I changed config file as per above and its showing different error code while running application

HTTP Error 500.31 - Failed to load ASP.NET Core runtime
Common solutions to this issue:

The specified version of Microsoft.NetCore.App or Microsoft.AspNetCore.App was not found.

This may be because of i have many runtime installed on pc

Could you please confirm whether your application is connecting to database? if yes, ensure that the Apppool identity user has access to the database.

To troubleshoot why your .NET Core web application isn't running on IIS 10.0, there are a few key areas to check:

Web.config File: Your web.config file seems to have some issues. Specifically, there's an extra element and a misplaced closing tag for the element. Here’s a corrected version of your web.config:

1. Permissions: Ensure that the application pool identity has the necessary permissions to access the application files and folders, especially the Logs directory if logging is enabled.

2. Event Viewer Logs: Check the Windows Event Viewer logs for any errors related to the application. Look under Windows Logs -> Application for any .NET Core or IIS related errors.

3. IIS Logs: Check the IIS logs located at C:\inetpub\logs\LogFiles for any requests hitting your application and any related errors.

4. Application Logs: If stdout logging is enabled in your web.config, check the .\Logs\stdout file for any application-specific errors. Ensure the path exists and the application pool identity has write access to it.

5. IIS Configuration:

   • Ensure the site is configured to use the correct application pool.
   • Ensure the application pool is configured for No Managed Code, as ASP.NET Core applications don't need a .NET CLR.

Allani Saikumar

I tried it. getting below error

HTTP Error 500.31 - Failed to load ASP.NET Core runtime
Common solutions to this issue:
The specified version of Microsoft.NetCore.App or Microsoft.AspNetCore.App was not found.

in cmd , i treid to list out the .net dsk and runtime

Try this once.