The following is excerpted completely from my Computerworld blog. Normally, I'd just give the highlights, but felt this was sufficiently important to give the full scoop on either blog.
A week ago, Microsoft released fix under KB article 902400 for security bulletin MS05-051. The patch is to fix a known vulnerability with the COM+ and Microsoft Distributed Transaction Coordination (MSDTC) subsystems in Windows.
There is also some information on turning on Transaction Internet Protocol (TIP) in Win 2000 machines after the patch in KB article 908620. TIP was disabled by default on XP and 2003 machines, so the article is probably not relevant for most XP or 2003 machines unless the administrator turned on TIP.
I think I have also stumbled onto an as yet undocumented problem related to this patch. I can no longer use Remote Desktop Protocol (RDP) to connect to the console session of the two servers that received the patch. So I'm using UltraVNC for these servers for the time being until I can fix the problem.
The only errors that I have seen are on pop-ups that appear after the attempt to connect fails. I get either "Error : The requested session is not configured to allow Remote Control." if I try connecting from Terminal Services Manager, or if I attempt to connect using RDP "Error connecting to existing session for <username> (Id 0). The operation completed successfully." pops up.
If anyone has any ideas, let me know.