An authentication error has occurred (Code: 0×80090303)

An authentication error has occured (Code: 0x80090303)

I got this message today after setting up a very basic VPN with Server 2008 (yes, an article for that is coming).
After logging on successfully to the VPN, I noticed I couldn’t ping my server by name.  I chalked this up to a badly (or rather, mis-) configured DNS server.  I could ping the IP, though, so I plugged that into the remote desktop client.

Lo and behold, the above error message appeared.

After scouring the interwebs for a while looking for the solution, it emerged that (if you have a correctly configured DNS server), you should be able to log in if you use the name of the server, but perhaps not necessarily the IP.  Anyway the long and the short of it is, I can’t verify whether or not that’s true, but it didn’t work and I needed a solution.

Luckily, Microsoft has released a hot fix just for this issue!
See http://support.microsoft.com/kb/953760

Originally posted 2009-07-13 09:00:34.

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