Let me open a case so we can determine this. Without a support case we're guessing. All I know is what we have cases for or what others helping in communities have showcased.
We cannot confirm what we don't have cases for. I am passing along reports of people investingating the issues. Again, it will be free, I will set up a call back, all I need is your phone number. Send an email to susan-at-msmvps.com (change the -at- to @)
Also make sure you boot from non windows media and scan "under" the operating system. Scanning from a running Windows may not find it.
Used the Norton Bootable Recovery Tool twice this week. No risks found! Talked to MS today. They ran the SFC and established a case. A level 2 professional will contact me tomorrow. The tech on today's call seemed to think that they would tweak the update and re-release. My machine is functionally perfect, but I don't like the queasy feeling of possibly having a corrupt kernel. etc.