Exchange 2013 and Bugcheck 0x000000ef
Tuesday, August 27, 2013
After our recent Exchange 2013 rollout, we noticed a problem with the Exchange 2013 servers (virtual guests on a HyperV cluster) experiencing clock drift and ultimately bugchecking (aka blue screen) with 0x000000ef errors. These crashes and clock drifts occurred once every couple of days and quite aside from the crashes, clock drift is a very big deal on any kind of server these days. While the crashes were disruptive in their own right, the potential problems caused by someone having to wait a bit to access their mailbox or receive a message is nothing to the problems that could be caused by the timestamp on an email being a day or two out.