The imported project “C:\Microsoft.CSharp.targets” was not found

Question

I got this error today when trying to open a Visual Studio 2008 project in Visual Studio 2005:

The imported project \"C:\\Microsoft.C

Answer 1

In my case I could not load one out of 5 projects in my solution.

It helped to close Visual Studio and I had to delete Microsoft.Net.Compilers.1.3.2 nuget folder under packages folder.

Afterwards, open your solution again and the project loaded as expected

Just to be sure, close all instances of VS before you delete the folder.