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

This is the solution I find out

1. Uncheck the Visual Studio Hosting Process in project settings as shown below

2. Kill the exe . it will be your applicationname.vshost.exe from taskmanager

3. Now you can rebuild you application and run.

Note: You can re enable this option again with no problems.