I've been facing a "nasty" bug.
As beta tester, Avast Premier upgraded automatically from the former beta to the latest one.
Unfortunately, though, it broke something.
It seems that auto-upgrade corrupted Avast and, although I was able to log in my Desktop, I didn't have any internet connection.
LAN was connected, but it was showing no ip, no mask, nothing, just a blank screen.
When I logged in safe mode, internet was working fine 'cause Avast wasn't loaded.
I tried to repair Avast using another installer and it didn't work.
Then, I tried to uninstall Avast from the control panel and it froze, so I had to use AvastClear.
When I installed the latest beta using the offline installer from scratch, I worked flawlessly.
This is a bug that happens randomly.
I've been facing it few months ago with other builds.
It seems that something doesn't quite work as it should during the auto-upgrade process and it sometimes corrupts the installation.
An internet connection error, perhaps? Incomplete download? Does Avast checks the integrity of the downloaded version with something like MD5 Checksum?
I'm just asking, out of curiosity.
It's not a big deal, it's a beta, we are "advanced" users, we know how to handle simple tasks, but it would be better to fix this "bug".
Intel i7 6700HQ 2.60 GHz 4c/8th
16 GB of RAM DDR4 (8x2)
NVIDIA Geforce GTX 950M, 4GB GDDR5
Seagate SSHD 1TB connected through Sata III, AHCI.
Windows XP SP3 Professional x86 32bit
Microsoft Extended Support renewed annually.