I am a user of Avast Free. For the past few weeks I, along with many others, no doubt, have been distressed, bothered, concerned -- call it what you want -- about seeing the many posting issues here with the combination of Avast being installed and Windows 10 updating to 1803.
As I continued reading posts here day after day about the problems, I would get somewhat relieved when I'd see posts saying W10 (somehow) wouldn't try to install 1803 onto computers with Avast installed, members of Avast's team saying a patch was being installed automatically, users like Bob saying he came through the process ok, just to read other posts in the past day or two of people still experiencing problems.
Finally, my number came up, so to speak. Last evening a notification appeared on my computer that Windows wanted to install a new major update.
So, after saying a few prayers and swearing a bit, I took the plunge and let Windows do its thing. I didn't disable or remove Avast beforehand (yep, I have the latest build).
A half hour later, the job was done (I popped into the computer room a few times during that half hour (seemed like a lifetime) to see the percentage indicator go up).
And, my computer survived!
!!
I could breathe again...………….