Note: Be careful – messing up the registry can make your computer unusable!
Start the Registry Editor (e.g. by typing “regedit” in a console window). Then navigate to the following key:
Change the value from
“@oem3.inf,%CVirtA_Desc%;Cisco Systems VPN Adapter for 64-bit Windows”
“Cisco Systems VPN Adapter for 64-bit Windows”
Your VPN client should now be able to establish a secure communication channel.