A big, big, big sigh
Jerome Chout : Do not apply KB974571 to LCS/OCS Servers:
http://blogs.technet.com/jchout/archive/2009/10/15/do-not-apply-kb974571-to-lcs-ocs-servers.aspx
This is one of those patch testing moments that you just shake your head and wonder who was asleep at the wheel here. Just for grins I installed 974571 on my Live Communication Server 2005. The minute you reboot the box, the internal IM dies and refuses to log in, the LCS server service fails to start. When you log into the box and check the event viewer, it's very obvious that LCS is having a problem.
There are times that I know that it's hard to find patch issues. We have a lot of software, we have a corner issues. This one... this is a big fat ooops that implies to me that someone somewhere didn't do a basic job of testing.
This is why I have the "canary plan" where I test patches first before installing them. This is why i know patches can be uninstalled. This why we don't have automatic updates on.
In my opinion, this one should not have gotten out the door like this. And when one does, it impacts patch trust.
And for me, that's a big big sigh.
Read the complete post at http://msmvps.com/blogs/bradley/archive/2009/10/15/a-big-big-big-sigh.aspx