You might see error messages like “The VPN Client driver has encountered an error.” or “Cannot initiate VPN.”
Turns out there is a quick and easy fix for this.
From the Start screen type “regedit” or press the Windows Key+R and type “regedit” and press Enter to launch the Registry Editor.
Browse to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\vpnva
Double-click on the DisplayName key, and remove the INF information from the display name so that it appears as Cisco AnyConnect VPN Virtual Miniport Adapter for Windows x64. (or the 32-bit / x86 equivalent)
Click OK. Close Registry Editor and launch the AnyConnect client. The connection should work normally.