- Uninstall WatchGuard
- Delete the folder C:\Users\
- Reinstall WatchGuard
Works better than before now.
I had been using WatchGuard for a few months on Win 8 and then Win 8.1 successfully although the connection was often 'difficult'. But, for reasons unknown, it stopped working mid Feb 2014.
I was originally using WatchGuard 11.6.0.
Now using WatchGuard 11.8.0. (Build 425534) on Windows 8.1.