Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 
Community Member

Vista Buisness VPN Error: 442


I have seen a number of posts and searched a number of sites looking for a solution for the 442 error.

I am using Version as this is the only supported (and downloadable) version by my network admins.

At least 90% of the time, I type in my password and I receive the following:

Error 442: Failed to enable virtual device.

What can be done about this?


Re: Vista Buisness VPN Error: 442

There are numerous things that you can do to try to solve the problem. There is, for as far as i know, no real solution.

You can try one (or more) of the following things:

- Multiple NICs enabled:

Disable all NICs you do not have in use. If you have a wireless-NIC and a ethernet-NIC, and you're only using the wireles; disable the ethernet-NIC.

- Manually enable the VPN Adapter:

Manually enable the VPN-Adapter in 'Network Connections'

- Reboot!

Reboot your laptop

- Fix the VPN Adapter

Open Network and Sharing Center

Open Network Connection Manager

Enable the virtual adapter (Cisco VPN Adapter)

Right-click on it and select Diagnose

Select Fix

- Run the following from 'cmd':

reg add HKLM\System\CurrentControlSet\Services\Tcpip\Parameters /v ArpRetryCount /t REG_DWORD /d 0 /f

Reboot after this

I hope that one of these will solve your problem, but sometimes it's just a matter luck.

Please rate if you find the post usefull!



Community Member

Re: Vista Buisness VPN Error: 442

Thanks, I am aware of these steps.

Is this a Cisco bug? or a Vista bug?

Even with the "random" fix methods, this is a major inconvenience.


Re: Vista Buisness VPN Error: 442

This is actually a Cisco bug, it's solved in newer versions of the VPN Client.

The problem with your VPN Client is that version is a Beta version for Windows Vista, and as we all know; Beta's have bugs!

I think it's advisable for your network administrators that they start supporting more stable versions of the VPN Client!

Please rate if the post is usefull!



CreatePlease to create content