Visual Studio 2012 csc.exe Error. Executable not valid for OS

Question

I am getting the following error when trying to compile and test any type of project in Visual Studio 2012 Professional.

Error 1 The specified task executable \

Answer 1

I've faced this problem while i am trying to move Asp.Net Mvc Project from one computer to another ; error message was : The specified task executable location "c:\users\mypcname\documents\visual studio 2015\Projects\TestMVC\packages\Microsoft.Net.Compilers.1.0.0\build\..\tools\csc.exe" is invalid. I solved this by

1. Creating new Mvc Project ;
2. going to that folder \Microsoft.Net.Compilers.1.0.0\build..\tools
3. and Copied the csc.exe file to my Projets >> \Microsoft.Net.Compilers.1.0.0\build..\tools\

i think when i was copying the project from the original Computer i left that csc.exe file in the specified folder.

Hope this will help someone.