There is nary an error message that send shooting pain through a VPN user's spine than "Reason 422: Failed to enable Virtual Adapter". There are too many reasons, too many ways it can be fixed. The error might as well say "Bad thing - dunno." Well, after I installed VirtualBox onto yet another Windows 7 release candidate machine, my VPN client no longer worked, Reason 422 just laughing at me.
I tried rebooting. No dice.
I tried unchecking the VirtualBox networking driver on the VPN adapter. Nothing.
I tried removing VirtualBox. No good.
So, I though I'd try to treat the Cisco VPN client like the fragile little primadonna that it is, and I have everything working again.
- Uninstall VirtualBox
- Uninstall the Cisco VPN client
- Install VirtualBox
- Install the Cisco VPN client
Reboot when the software installs and uninstalls tell you to.