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

Install Microsoft.CodeDom.Providers.DotNetCompilerPlatform.BinFix nuget It fixed the issue for me

Answer 2

for me updating the nuget package...

Microsoft.Net.Compilers

to the latest at the time of this post 2.7.0 fixed this for me. it was version 1.3.2

Answer 3

Before you try anything drastic, restart your computer

Answer 4

I have VS 2017 Enterprise and for me the issue was resolved by this:

1. Downgraded Microsoft.Net.Compilers from 2.3.1 to 2.3.0
2. Downgraded Microsoft.CodeDom.Providers.DotNetCompilerPlatform from 1.0.5 to 1.0.4.

Answer 5

I was having the same issue in MVC 5. I just opened Nuget Package Manager, searched and updated the following:

Microsoft.CodeDom.Providers.DotNetCompilerPlatform

Answer 6

UPDATE the Microsoft.CodeDom.Providers.DotNetCompilerPlatform package to V1.0.7

• Find Microsoft.CodeDom.Providers.DotNetCompilerPlatform from NuGet Uninstall Old version
  Install V1.0.7 or latest