After trying to research the many questions these logs raised for this newb, I settled on this section - please redirect as appropriate because I have no experience with sql servers, vc_red.msi, rollback scripts or the like. I have a 1st gen Surface Laptop. It came new with Windows 10S but, some time ago, I did the voluntary change to Windows 10 Pro to install software outside the Windows Store to support a new document scanner (all a while back and without incident). I found these logs very recently. One is dated 12-26 and references the installation of Microsoft Visual C + + 2010, which was not initiated by me, refers to a user not created by me ("MELISS~1") , client-sql server language, vc_red.msi which looks like it belongs with an OS older than mine, among others. The other log is from 12-22 and makes various references to what looks like a mobile version of Microsoft Word, 16.11029 (I have Office Home & Student), as well as other packages, installations and machine ids I can't begin to link to anything I know about my laptop. I'm a home user only - no linking a phone, no development uses or skills (obvs). I'm not sure if this is malware or nothing and, if nothing, just know that being nice to me anyway may point me in the right direction to learn. Thank you very much!