Cisco VPN & Windows 8 – Unable to enable virtual adapter

Open Registry editor by typingregedit in Run prompt
· Browse to the Registry Key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\CVirtA
· Select the DisplayName to modify, and remove the leading characters from the value data upto “%;” i.e.
– For x86, change the value data from something like “@oem8.inf,%CVirtA_Desc%;Cisco Systems VPN Adapter” to “Cisco Systems VPN Adapter”
– For x64, change the value data from something like “@oem8.inf,%CVirtA_Desc%;Cisco Systems VPN Adapter for 64-bit Windows” to “Cisco Systems VPN Adapter for 64-bit Windows”
· Try connecting again

Activate Windows 8 Enterprise

Option 1: Command line

Start a command prompt as an administrator

First run
slmgr.vbs -ipk YOUR-PRODUCT-KEY-HERE

Then run
slmgr.vbs -ato

Option 2: GUI

Start a command prompt as an administrator

Run the following command
slui.exe 3

Type in the product key and click the Activate button.