Unable to copy file reference.dll to bin/reference.dll. The process cannot access the file reference.dll because it is being used by another process

Question

For one of my ASP.NET 3.5 applications, every single time I try to build the web app, it throws the following build errors in Visual Studio 2008:

Error 16

Answer 1

Hi I'm facing the same issue for a little while. It's very annoying.

I have an easier yet not so efficient solution for the problem. Cleaning the project or solution solves the problem.