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Cisco VPN on Windows 8: Failed to Enable Virtual Adapter

Ozzie 4:33 PM , , , 2 comments

After migrating my laptop to Windows 8 RTM, I installed Cisco VPN client software. All went well but when trying to connect to my workplace VPN, I got the error “Failed to enable virtual adapter”.

The problem is that, for some unknown reason, the adapter’s name get’s garbled on your windows registry.

The solution lies on the following steps:

  1. Open Registry editor by typingregedit in Run prompt
  2. Browse to the Registry Key: HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\CVirtA
  3. Select the DisplayName to modify, and remove the leading characters from the value data up to "%;" i.e. 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”
  4. Try connecting again

Good luck!

2 comments :

  1. MelandrielNovember 2, 2012 at 3:24 AM

    Hi-
    Just upgraded from Windows 7 to Windows 8 and ran into this problem. Tried these steps, but I have no “CVirtA” in my registry. I have a “CVPND” and a “CVPNDRVA” and the display name in each is “Cisco Systems, Inc. VPN Service” and “Cisco Systems Inc. IPSec Driver”, respectively.
    Not sure where to go from here. Any help would be greatly appreciated. (I’m obviously not a computer wiz)

    ReplyDelete
  2. OzzieNovember 2, 2012 at 10:22 AM

    On the registry tree, "CVirtA" comes right before the ones you mention. Are you sure it's not there? If it's not, I can suggest you a couple of things:
    1. Re-install the Cisco VPN Client Software.
    2. If the above fails, export the CVirtA key from a working computer and import it to tha upgraded PC registry.

    HTH.

    ReplyDelete

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