We have seen many cases like this one. Try this:

1. Remove the Vista from the domain.
2. Install MS update KB926505. or check this post.

Solved: Vista can't join the SBS ...Also. when trying to join SBS 2003 using
client deployment tools, you may receive this message: The Small Business
Server Networking Wizard was not ...
http://www.chicagotech.net/netforums...opic.php?t=264

3. Rejoin the domain.

Please post back with the result.


--
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com
"Alex Zamfir" Alex wrote in message
news
I have the same problem but the solution that worked for you Bob didn't for
me. Any other suggestions guys? And there is loss of functionality. The
firewall profile detected is not "domain" but "public" and the group
policy
firewall settings are not in effect. That means I cannot connect to the
workstation via remote desktop and other such issues.

Any advice will be greatly appreciated.

Alex.


"BobP" wrote:

Problem Solved!

Solution was to unjoin the workstation from the domain, reset the
secure channel, then rejoining the workstation back to the domain


On Fri, 22 Feb 2008 07:46:20 -0500, BobP
wrote:

Hi-

On some of the workstations on my SBS2003 network the Network and
Sharing Center is showing the network connection as "Unauthenticated"
and showing a yellow triangle icon.

It doesn't seem to have any impact on performance that I can see, but
looks messy.

What does Unauthenticated in this context mean, and why do some
stations show it and not others? How do I get rid of it?