core

.NET Core 2.1.8 Known Issues and Resolutions

ASP.NET Core 2.1.8

Microsoft.AspNetCore dependency downgraded in this release

Existing applications may throw a FileLoadException after the 2.1.8 release is installed. The stack trace below is common.

Unhandled Exception: System.IO.FileLoadException: Could not load file or assembly 'Microsoft.AspNetCore, Version=2.1.7.0, Culture=neutral, PublicKeyToken=adb9793829ddae60'. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
   at Program.CreateWebHostBuilder(String[] args)

Workarounds

If this issue affects your application, update the project in one of the following ways:

1. Remove version from AspNetCore.App <PackageReference Include="Microsoft.AspNetCore.App" />
2. Add <PackageReference Include="Microsoft.AspNetCore" Version="2.1.7" /> (NB: this is not the .App package)
3. Update AspNetCore.App: <PackageReference Include="Microsoft.AspNetCore.App" Version="2.1.8" />

More information

• See aspnet/AspNetCore #7546 for more information about this specific issue.
• See 2.1 Known Issues for information about all the earlier known issues.

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