WatchGuard
1. Control Panel-> System-> Hardware-> Device Manager-> Network Adapters, right-click on "Tap-Win32 Adapter" and select Uninstall.
2. Explore C: \ Program Files \ WatchGuard \ WatchGuard Mobile VPN with SSL and delete the contents of the folder.
3. Edit the registry -> HKEY_CURRENT_USER \ Software \ WatchGuard \ SSLVPNClient and delete the key and the contents.
4. If the user selected run at startup go to HKEY_CURRENT_USER \ Software \ Microsoft \ Windows \ CurrentVersion \ Run, delete the "WatchGuard Mobile VPN with SSL" key.
5. Remove the shortcuts from the Start menu in two ways:
• From Explorer to C: \ Documents and Settings \ All Users \ Start Menu \ Programs \ WatchGuard \ and delete "Mobile VPN with SSL Client"
• Browse through the Start Menu to WatchGuard, right-click on "Mobile VPN with SSL client" and select "Delete".
Sometimes cached client information can cause problems when connecting. Deleting it will correct the problem. Delete all files in the C: \ Users \ <username> \ AppData \ Roaming \ WatchGuard \ Mobile VPN \ directory for affected users.
Then reinstall the client along with the tap driver