Just wanted to share my experience with this.
Like many of you I started to get avast pop-ups every 5 minutes or so with Google Chrome showing VBS:malware-gen. I am using Windows 10 Home. I ran a boot time scan and it found approx 100 infected files, most of which were moved to chest, but it auto deleted approx 10-20 files in Windows root folder.
When the scan finished it took me to the login screen and I typed in my password like usual, and then all of a sudden it was like I was starting the computer up for the first time and it was asking me to make a new microsoft account and setting up new profile etc. I panicked a little here but all of a sudden the screen went blank and flickered and then went back to my original sign in screen with my account intact. I suspect it was auto-restoring some stuff in the background and it occured during this time. I was able to log in like normal and nothing seemed out of place. However, I tried to do a system restore and it failed, so maybe there is still a problem somewhere.
Anyway, I did the avast update and everything seems fine now. I checked the virus chest which had approx 100 files in it. I selected all of them and went to restore, but it seems like they have already been restored because avast prompts me to overwrite/skip the files that I'm restoring.
I checked system restore after all this, and my restore points have all disappeared so now I can't even test it to see if it works, I'm not sure what else happened. Anyone have any suggestions? I ran sfc /scannow in command line to check windows system files and it found nothing wrong. any other scans I can do ?