title: The file is being used by another process error when building solution in VIsual Studio
body: <p>When building a Windows Forms project in Visual Studio 2010 I have a following problem occurs:</p>
  
  <p>69: "Unable to copy file "bin\Debug\MyApplication.exe". The process cannot access the file because it is being used by another process."</p>
  
  <p>I can release and remove this file manually using "Unlocker" application and there I can see that a devenv.exe blocks my application (The Visual Studio itself). What are the possible reasons for this and how it can I overcome this problem.  </p>