My solution is: <a href="http://www.codeproject.com/useritems/DebuggingServiceOnStart.asp[^]">http://www.codeproject.com/useritems/DebuggingServiceOnStart.asp[^]</a> rel=nofollow> Re: Debugger.Launch() wont' work on Vista x64 freedeveloper13-Sep-07 2:09 Thanks for your message, maybe is a bug in NET framework and Vista 64, I only tested it in Vista business 32.