Monday, 23 January 2017

Web API "could not be opened because the C# 2015 compiler could not be created"

I had a WEB API project that could not open in Visual Studio 2015. It would error with "could not be opened because the C# 2015 compiler could not be created".

In the end, the solution was to delete %AppData%\Local\Microsoft\VisualStudio\14.0\ComponentModelCache

and restart Visual Studio.

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