Visual Studio 2017 bin\roslyn files locked during build

Question

I am running VS2017 version 26430.13 and every time I try to build a web project I get errors that access to the files in the bin\\roslyn is denied. Over a period of about 5 mi

Answer 1

A workaround is close VS, open task manager and kill any instances of VBCSCompiler.exe

(Thanks Tom John: https://developercommunity.visualstudio.com/content/problem/71302/binroslyn-files-locked-during-build.html)