Firstly thanks to everyone who offered help and tips upon this issue..
good news is, problem is finally fixed!
after hours of many attempts of changing lots of different things on both my PC and ccleaner app, I've come to a conclusion that none of that worked except for one thing..
here's what I did: I went to my CCleaner, tools, software updater, there were like 6 or 7 apps (don't even remember using any of them ever, like Microsoft Office apps) that needed to be updated, once I did that, then went back to patching your PC, and there it goes! it's back working just fine!
thanks yall and gl to those still suffering with this annoying issue.
