Nortel has released version 10.04.016 of their VPN client that now supports both 32-bit and 64-bit versions of Windows 7. This single client supports the following operating systems (in both 32-bit and 64-bit versions);

• Windows 7: Home Basic, Home Premium, Professional, Enterprise and Ultimate
• Vista: Home Basic, Home Premium, Business, Enterprise, and Ultimate
• XP: Home, Professional, and Tablet

There are quite a few resolved bugs in this release and quite a few known issues. I would advise everyone to read the release notes thoroughly before spending too much time troubleshooting.

You can find the actual NVC (Nortel VPN Client) on the Nortel/Avaya website and the release notes here.

Cheers!

Updated September 2, 2010
It would seem that this is a very popular post given the number of people searching for information regarding the Nortel VPN Client (NVC) and Microsoft Windows 7. I’ve uploaded the complete documentation archive containing the installation instructions and troubleshooting instructions. In addition if you are looking for the new NVC you can download it directly from Nortel here. While the client software isn’t “licensed” it is restricted by US export laws because of it’s 128-bit (and greater) encryption capabilities.
Updated Friday December 17, 2010

I’ve added links to the 32-bit and 64-bit clients in the comments below.

Updated Sunday April 10, 2011

I can no longer host the Avaya VPN client software do to the enormous bandwidth utilization on my host. In addition there are just too many people abusing my gesture. I had a single IP address from China download the client software so many times that it consumed 10GB of bandwidth.

Updated Saturday May 7, 2011

Avaya has released v10.04.109 of their VPN client software which is available in this post.