Did your internet stop working Tuesday/Wednesday giving the error “DNS server isn’t responding” or something similar? If so, make sure to check your Avast Virus Definitions for updates. There was an error in the virus definitions that blocked DNS lookup requests.
The issue has already been corrected in the 8/14/2018 Virus Definitions update. So if it hasn’t already corrected itself, a manual update and restart should fix the problem.
How-to manually update:
Also, expect your Windows 10 machines to be running a bit slow as the November 2018 Cumulative Update came out on Tuesday, 11/13.