The update is the Exchange Server 2010 SP3 Update Rollup 8 (KB2986475), one of several Exchange Server update packages released Tuesday. There were also update packs for Exchange Server 2007 and 2013, as well as language packs for Exchange Server 2013 Unified Messaging. No problems have been reported with those updates.
In withdrawing the update, Microsoft recommended that users who had already installed the Exchange Server 2010 update remove it. Now the company says that such users should install the new version of the update as soon as possible.
The initial version of the update affected the ability of Outlook to connect to Exchange. The security updates for Microsoft Exchange this month had actually been delayed a month from the November Patch Tuesday.
Problems with released Microsoft updates have become a common occurrence over the last two years. Earlier today Microsoft issued fixes for problems caused in Word 2010 and 2013 by updates installed in October. Microsoft had to recall another buggy Exchange update in August 2013. The buggy code in that update turned out to be in an embedded component written by Oracle, but it was still part of Exchange Server and distributed by Microsoft. That same month a Windows Media Services update had to be withdrawn and reissued. There were several other withdrawn updates in 2013. Several updates in the Summer of 2014 wreaked havoc on users' systems and had to be retracted In September the same happened to a Lync update.