Long shot, but my unit tests fail in debug mode with the error Unhandled exception at 0x00007FFCE677F6FE (ucrtbase.dll) in testhost.exe: Fatal program exit requested.
As far as I can see it’s a c++ exception but I can’t see where it comes from or why.
My test is a C# project using Rhino.Testing.
Fun fact - each test runs and passes fine separately , but if I run all of them in one go I get the exception. I have a clue that may might be related to specifying NET7 or NET7-windows but I can’t confirm it.