Comments on: How to fix Cisco VPN Client error 442 on Windows Vista

By: Mukundi A

Mukundi A — Thu, 02 Oct 2008 20:31:15 +0000

This fixed my problem — download and install the latest version of DNE then restart and open vpnclient. If it does not work reinstall the vpnclient.

http://www.deterministicnetworks.com/Downloads/dneupdate.asp

By: Roger B

Roger B — Sat, 13 Sep 2008 22:20:38 +0000

I found the answer. Log in as administrator, and remove and reinstall as administrator. On Vista you need to enbale adminintrator account. There is info on the web how to do that.

By: Hans Nierop

Hans Nierop — Sun, 07 Sep 2008 13:31:01 +0000

I have try al the things but nothing helps. At least I try the solution of Tim (9) and now it works! I work with Vista. Thanks!

By: John Bryntze

John Bryntze — Tue, 02 Sep 2008 19:46:22 +0000

Thanks for the ideas, I have an KB article with some other ideas how to solve this problem:
http://john.bryntze.net/jbkb/index.php?title=Vista-kb18_Cisco_VPN_%22Reason_442:_Failed_to_enable_Virtual_Adapter%22

By: Tim

Tim — Thu, 21 Aug 2008 22:08:16 +0000

I had this same problem start out of nowhere. After coming to this site and seeing some of the fixes, all I did was open C:\Program Files\Cisco Systems\VPN Client, right clicked on ipsecdialer.exe and vpngui.exe and clicked properties. I set both to run in xpSP2 compatibility mode and run as administrator. Problem was immediately fixed, no reinstallation was necessary and no DNE update was necessary. But yes I have to agree to let it run each time I start it.

By: JoMo

JoMo — Sat, 07 Jun 2008 00:26:23 +0000

I just want to add one quick not. If you still have issues after trying the above workarounds. Try installing ccleaner (free) to clean your registry. Also use it to make sure the VPN client doesn’t start along with windows.

I haven’t had a single problem since I used ccleaner. Hope this helps someone…

By: Lamnk

Lamnk — Tue, 20 May 2008 21:04:59 +0000

Thank you for the guide, Jomo.

By: J0M0

J0M0 — Sun, 18 May 2008 16:02:00 +0000

Thanks for the direction.
The following procedure worked perfectly for me.

-Uninstall VPN client.
-Restart
-Install DNE Update.
-Restart
-Log on as administrator
-Install VPN client (Right click “run as admin”)
-Restart
-Log in as standard user
-Open VPN client
-Open task manager
-Click “show process from all users”
-Set both cvpnd.exe and vpngui.exe for XP SP2 Compadibility mode, and check the “run as administrator” box
-Restart

You will have to clic the UAC prompt when starting windows, and when opening the client UI. But it finally works!!!!!

This working setup is on a Vista Enterprise SP1 and Cisco VPN Client v5.0.03.0530.

Hope it helps!

By: Lamnk

Lamnk — Sun, 27 Apr 2008 09:05:32 +0000

There is a link to “DNE Support” at the top left corner:

http://www.deterministicnetworks.com/support/dnesupport.asp

By: Joe

Joe — Fri, 25 Apr 2008 17:51:55 +0000

The link to the latest driver on deterministicnetworks.com has a message saying their products are retired from commerical sale. How can one get the latest driver?