Error CA0001 after upgrading Visual Studio to version 16.8.4

Question

After upgrading VS to 16.8.4 (I can't remember exactly what version I was on, but it was 16.7.something) I now get an compile error CA0001 saying 'Exception of type 'Phx.FatalError' was thrown. Clicking on the error code sends me to

https://learn.microsoft.com/en-us/visualstudio/code-quality/ca0001?f1url=%3FappId%3DDev16IDEF1%26l%3DEN-US%26k%3Dk(CA0001);k(TargetFrameworkMoniker-.NETFramework,Version%253Dv4.7.2)%26rd%3Dtrue&view=vs-2019

but that page doesn't mention this error message. This is a complete stopper for me as I don't know how to clear the error. Anyone here got any ideas, please?

I don't even know if I can get back to an earlier version of VS.

Thanks in advance,

Peter

Answer 1

Hi PeterToye,

You can try to use this method:

1. Run cmd in administrator mode
2. Type this command: regsvr32 "%ProgramFiles(x86)%\Microsoft Visual Studio\2019\Community\Common7\Packages\Debugger\msdia140.dll"

If it doesn't work, you can leave a comment under this thread which has been Investigated. Best Regards, Dylan

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