If the above error happens run the following command from an elevated command prompt:
- Navigate to: C:\Program Files (x86)\Cisco Small Business\QuickVPN Client>
- openssl.exe s_client -showcerts -connect 188.8.131.52:443 >c:\temp\cert.pem
- Where 184.108.40.206 is your WAN IP.
- Make sure that there is a Temp folder under C:\
- Copy the cert.pem file from C:\Temp to the QuickVPN Client folder.
- Click Yes and through the UAC prompts if required.
- Close and re-open the QuickVPN Client
Original instructions here with a slight modification by us for Vista/Windows 7/8:
- Cisco Home Community: Server's certificate doesn't exist on your local computer. Do you want to quit this connection?
Microsoft Small Business Specialists
Co-Author: SBS 2008 Blueprint Book