Visual Studio locks output file on build

Question

I have a simple WinForms solution in VS 2010. Whenever I build it, output file (bin\\debug\\app.exe) ends up locked, and subsequent builds fail with a message like \"

Answer 1

The only thing that worked for me was to quit Visual Studio 2012, delete the BIN and OBJ folders for the project having problems, and to open Visual Studio again.

Problem solved... Until next time.