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| title | author | description | manager | ms.author | ms.date | ms.prod | ms.technology | ms.topic | uid |
|---|---|---|---|---|---|---|---|---|---|
| Troubleshoot for ASP.NET Core | Rick-Anderson | Understand and troubleshoot warnings and errors with ASP.NET Core projects. | wpickett | riande | 04/05/2018 | asp.net-core | aspnet | content | testing/troubleshoot |
Troubleshoot ASP.NET Core projects
The following links provide troubleshooting guidance:
- Troubleshoot ASP.NET Core on Azure App Service
- Troubleshoot ASP.NET Core on IIS
- Common errors reference for Azure App Service and IIS with ASP.NET Core
- YouTube: Diagnosing issues in ASP.NET Core Applications
.NET Core SDK warnings
Both the 32 and 64 bit versions of the .NET Core SDK are installed
In the New Project dialog for ASP.NET Core, you may see the following warning appear at the top:
Both 32 and 64 bit versions of the .NET Core SDK are installed. Only templates from the 64 bit version(s) installed at C:\Program Files\dotnet\sdk\" will be displayed.
This warning appears when both 32-bit (x86) and 64-bit (x64) versions of the .NET Core SDK are installed. Common reasons both versions can be installed include:
- You originally downloaded the .NET Core SDK installer using a 32-bit machine, but then copied it across and installed it on a 64-bit machine.
- The 32-bit .NET Core SDK was installed by another application.
- The wrong version was downloaded and installed.
Uninstall the 32-bit .NET Core SDK to prevent this warning. Uninstall from Control Panel > Programs and Features > Uninstall or change a program. If you understand why the warning occurs and its implications, you can ignore the warning.
The .NET Core SDK is installed in multiple locations
In the New Project dialog for ASP.NET Core you may see the following warning appear at the top:
The .NET Core SDK is installed in multiple locations. Only templates from the SDK(s) installed at 'C:\Program Files\dotnet\sdk' will be displayed.
You are seeing this message because you have at least one installation of the .NET Core SDK in a directory outside of *C:\Program Files\dotnet\sdk*. Usually that happens when the .NET Core SDK has been deployed on a machine using copy/paste instead of the MSI installer.
Uninstall the 32-bit .NET Core SDK to prevent this warning. Uninstall from Control Panel > Programs and Features > Uninstall or change a program. If you understand why the warning occurs and its implications, you can ignore the warning.