Re: VPN Server may be unreachable (-14) in Windows 10 (Forticlient SSL VPN)
I too was getting this error. For me it was the password length. The original passwords were 16 characters, after dropping the first four (12 character length), the VPN was able to connect.
Seems silly that an industry leading security appliance throws an ambiguous error due to password length.
Tested, confirmed and verified on five different accounts in the same VPN GROUP...
Your mileage may very, but thought I'd share...