All of a sudden my mRemoteNG did not start anymore. It seemed to start, but did not come up and vanished. Thanks to http://forum.mremoteng.org/viewtopic.php?f=3&t=2989 I realised that I had to force a shutdown earlier. Solution: Remove - %APPDATA%\mRemoteNG - %USERPROFILE%\AppData\Local\mRemoteNG