Answer by Jacek Kołodziejek for Could not find a part of the path ... bin\roslyn\csc.exe

I tried multiple top answers until the below steps worked (ASP.NET project targeting .NET Framework 4.6.2, Visual Studio 2019 on a system with crazy restrictive group policies, March 2021).

I needed to:

• run VS as Admin

• in package manager console run

  Update-Package Microsoft.CodeDom.Providers.DotNetCompilerPlatform -v 2.0.1

• Clean & Rebuild Solution

Without running VS as Admin, group policies blocked ps1 scripts that Update-Package needed to run.

PS. Before this worked, I tried numerous other answers (and ran git reset --hard after they failed). I do not know if any of them contributed to this eventually working. I tried:

• https://stackoverflow.com/a/32780433/4658148
• https://stackoverflow.com/a/34391473/4658148
• https://stackoverflow.com/a/41484473/4658148
• https://stackoverflow.com/a/62136000/4658148
• https://stackoverflow.com/a/54341249/4658148
• https://stackoverflow.com/a/51308385/4658148