Could not find a part of the path … bin\roslyn\csc.exe

by

TL; DR

run this in the Package Manager Console:

Update-Package Microsoft.CodeDom.Providers.DotNetCompilerPlatform -r

More information

This problem is not related to Visual Studio itself, so answers suggesting adding build steps to copy files over are rather a workaround. Same with adding compiler binaries manually to the project.

The Roslyn compiler comes from a NuGet package and there is/was a bug in some versions of that package (I don’t know exactly which ones). The solution is to reinstall/upgrade that package to a bug-free version. Originally before I wrote the answer back in 2015 I fixed it by installing following packages at specific versions:

  • Microsoft.Net.Compilers 1.1.1
  • Microsoft.CodeDom.Providers.DotNetCompilerPlatform 1.0.1

Then I looked into .csproj and made sure that the paths to packages are correct (in my case ..\..\packages\*.*) inside tags <ImportProject> on top and in <Target> with name “EnsureNuGetPackageBuildImports” on the bottom. This is on MVC 5 and .NET Framework 4.5.2.

More Related Contents:

  1. ASP.NET MVC Global Variables
  2. Passing data to Master Page in ASP.NET MVC
  3. Visual Studio – Resx File default ‘internal’ to ‘public’
  4. ASP.NET MVC – How to show unauthorized error on login page?
  5. ASP.NET MVC Razor render without encoding
  6. MEF with MVC 4 or 5 – Pluggable Architecture (2014)
  7. The model item passed into the dictionary is of type ‘mvc.Models.ModelA’ but this dictionary requires a model item of type ‘mvc.Models.ModelB‘
  8. Can I use ASP.NET MVC together with regular ASP.NET Web forms
  9. System.web.mvc missing
  10. How to write code that runs once
  11. How do I get the contents of a JSON file I added in the StartUp method to use it in one of my actions?
  12. How to Convert JSON object to Custom C# object?
  13. HTML.ActionLink method
  14. Fire and forget async method in asp.net mvc
  15. Object cannot be cast from DBNull to other types
  16. Read connection string from web.config
  17. 404 error after adding Web API to an existing MVC Web Application
  18. Event Bubbling and MVP: ASP.NET
  19. What is the best way to lock cache in asp.net?
  20. An error occurred during report processing. -RLDC reporting in ASP.NET MVC
  21. How do I log a user out when they close their browser or tab in ASP.NET MVC?
  22. Why is Asp.Net Identity IdentityDbContext a Black-Box?
  23. Asp.Net MVC3: Set custom IServiceProvider in ValidationContext so validators can resolve services
  24. How to create Select List for Country and States/province in MVC
  25. Repository Pattern, POCO, and Business Entities
  26. Specify Date format in MVC5 (dd/MM/yyyy)
  27. Can’t find how to use HttpContent
  28. Get first element from a dictionary
  29. LINQ to Entities does not recognize the method ‘System.String ToString()’ method in MVC 4
  30. How do I get a directory size (files in the directory) in C#?

Leave a Comment