Visual Studio 2019 v16.9 recently shipped with a bunch of new goodies for coders of all kinds, including functional programmers using F#, who likely will be interested in new tooling including .NET 5 ...
After more than a year in development, Microsoft released its .NET 5 software development platform on Tuesday, November 10, emphasizing unification of the platform and introducing the C# 9 and F# 5 ...
Just an offhand guess, but is the F# (.net 4.0) trying to run against a .NET 2.0 runtime? Which mscorlib is it referencing? Check the arguments being sent to the f# compiler (fsc.exe I think) - if you ...