How to Solve - HTTP Error 500.31 - Failed to load ASP.NET Core runtime IIS Error

HTTP Error 500.31 occurs when the ASP.NET Core runtime is not installed on the server or when the installed runtime is not compatible with the application. To resolve this issue, you can follow these steps:

Check if the correct version of the .NET Core runtime is installed on the server. You can download and install the runtime from the Microsoft website: https://dotnet.microsoft.com/download/dotnet
If the correct version of the .NET Core runtime is already installed, you may need to repair or reinstall it. You can use the following command in the command prompt to repair the runtime:


dotnet repair

If repairing the runtime does not resolve the issue, try uninstalling and reinstalling the runtime.
If the issue still persists, check the application's configuration and ensure that the runtimeFrameworkVersion in the .csproj file matches the version of the .NET Core runtime installed on the server.
Finally, ensure that the application is targeting the correct version of the .NET Core runtime. You can check this by right-clicking on the project in Visual Studio and selecting "Properties". In the "Application" tab, check the "Target framework" dropdown to ensure that it is set to the correct version of the .NET Core runtime.

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