Advanced Setup: Thank you for your reply. The culprit will be WiseCare 365. I use it weekly to remove junk files and clean the registry. Paretologic products were removed from this laptop over a year ago and replaced with WiseCare 365. I have tried restoring the registry back a few weeks to undo what WiseCare did, last Friday when I last cleaned the registry with it, but that makes no difference. It was after last Friday's WiseCare registry clean that the MBAM problem appeared. I will DEFINITELY heed your advice to cease using registry cleaners. I am most grateful for your assistance. As a further update, I re-enabled scanning within archives and the MBAM scan completed successfully, reporting OpenCandy detected in the MediaInfo app. I quarantined that. As soon as I enable rootkit scanning, the scan halts during the file system scan and Windows reports that Malwarebytes has stopped working. Before imposing on the experts in the malware removal Forum, I am going to try running the Windows System Update Readiness Tool, followed by another sfc, just to see if I can't get the Windows system repaired. I know that there are folks with really serious issues, so I don't want to take up the expert's time for what is, so far, just a nuisance mainly, and I have no concrete reason to believe that the laptop is infected. I definitely would like to have the anti-rootkit scanning capability, and I definitely want to get my Windows system made whole, so I will try what I can locally, and if it doesn't work, then I will follow up in the removal Forum. Thank you very sincerely, and Daledoc too, for your invaluable help. It is really appreciated. Have a great day. Regards, -Phil