My OS is Windows XP Pro x64 (64-bit)... custom built in 2012. Previously I had Kaspersky Anti-Virus 2013 installed. Two days ago (Oct 5th) I purchased Avast Inernet Security for my PC because I wanted a more complete protection package.
Background:
1. I uninstalled Kaspersky and then subsequently ran their KARemover.exe tool to remove all traces of it... rebooted.
2. Then I downloaded and installed Avast Internet Security... the installation halted because it said Adaware Antivirus conflicted and had to be removed. So I uninstalled Adaware Antivirus and then proceeded with the Avast installation.
3. Avast installed, started its services, detected my home network (selected Private) and I then ran a quick scan-- no issues. (I may have run the updater... I don't recall). All seemed well.
4. I shutdown my PC.
Problems/Issue:
1. Last evening I fired up my PC to do some work... but the desktop never populated-- I just had black screens with an active mouse. I was forced to do a hard shutdown.
2. Restarted my PC and got the same result as #1... getting aggravated now.
3. Booted using "Last Known Good Configuration" and the PC started normally. Finally Avast populated the system tray and had a red X in it.
4. The Avast UI came up and in the large red section stated "You are unprotected! Avast Services not running/Firewall is off (blah blah)"
5. Nothing I could do started anything... it also interfered with running any other application-- i.e., photoshop, firefox, etc. failed to launch.
6. Rebooted... went thru steps #1-3 again. Very angry now...
7. Uninstalled Avast... and also ran the AvastCleaner in SAFE mode... rebooted.
8. Re-installed Avast using the online installer... and the installation hung at the very end. And I was forced to kill the setup process... seems to have installed... so I launched Avast from the icon and got the same result #4... cursing Avast software at this point.
9. Uninstalled Avast and re-ran the AvastCleaner.
10. Rebooted my PC and all is well again (No Avast to cause problems)... shutdown machine and went to bed angry.
11. Today, I created this post.
From googling and looking on your forums, where many other customers currently describe having similar issues-- I'd say you're Avast programmers have dorked up your software! My plan is to download a previous version for WinXP Pro x64 (maybe go back two versions even!) and see if it installs. If that doesn't work I'll likely be asking for a refund.
EDIT: I also attempted the "Control Panel - Update" and "Control Panel - Repair" methods on the Avast... and neither worked.