The WSUS (Windows Updates) team explains how Windows Desktop Search may have been automatically applied to your servers without your explicit approval.
Note – This only effects customers that had Windows Desktop Search installed previously, which should be rare in a classic server configuration.
I wanted to get back to you with more information and guidance around the Windows Desktop Search (WDS) issue and the results of our investigation today.
As you know, Windows Desktop Search was published last February 07, as an optional update that was only applicable to systems which had WDS previously installed. Then on Tuesday of this week we revised that update package to be applicable (but still optional) to Windows XP SP2 and Windows Server 2003 SP1+ systems which did not have WDS installed. Unfortunately, in revising this update, the decision to re-use the same update package had unintended consequences to our WSUS customers. Namely many of you who had approved the initial update package for a limited number of machines, had Tuesdays’ WDS revision 105 automatically install on all clients because of the expanded applicability scope and because by default, WSUS is set to automatically approve update revisions. We sincerely regret the inconvenience this has caused and extend a sincere apology to all impacted customers.