BuildTasks.Csc task could not be loaded from the assembly?

I too tried the top answer with no luck so deleted the contents of my bin and packages dir, closed and re-opened VS and everything fine now.

It turns out that NuGet packages were committed to the repository and breaking everything. Deleting the project\project\packages directory from the repo solved all build problems since NuGet fetches the packages automatically on build.

I got this error when I created a new branch for my project.

It drove me crazy for an hour. I tried most of the suggestions over the internet including the accepted answer to this question.

I then closed the project, opened it again, cleaned it and the error is gone. So this means this could be cache issue.

Anyways, just wanted to share.

I have tried all solutions described before, but none worked.

What solved it for me, was to update the Microsoft.Net.Compilers from the NuGet Package Manager