Re: orphan zombies moaning 'uhhhp daaytz'
KB3125574 is the "everything since SP1" update.
For fixing the WU process specifically, there are updates KB3102810 (fix for Installing and searching for updates is slow and high CPU usage occurs), and KB3161608, update rollup which includes KB3161647, Windows Update client refresh June 2016
Biting the hand that feeds IT
