I dowloaded the free version of Avast 5 to my 3 computers. Then I purchased the Internet Security and upgraded. I uninstalled Pro and installed IS. My computer running XP accepted the upgrade and has been working perfectly, the other 2 systems are running Vista and have not worked since. I tried to repair Avast, no luck. I tried to uninstall and reinstall, no luck. I did a system restore to back when I had Pro, this fixed the new IS problems, but now Pro will not load completely, says to “fix”, but that doesn’t work.
Some of the problems are: Windows sidebar stopped working. Live Mail (the new Outlook) crashes anytime I try to reply, create or forward a message. Some web pages will not load completely ie: when uninstalling Avast, it brings you to a “why are you uninstalling” page, can’t make a choice, links don’t work. My online banking site will let me log in, but none of the links work, I can only see the home page. On Facebook, it lets me sign in, but home page only has the header and footer, no content just a white space, but I can see my profile screen. Avast homepage does not load, but I can access Support from the header.
Please help!!
Then I purchased the Internet Security and upgraded. I uninstalled Pro and installed IS.This should not be necessary as far as i know, If they all where avast 5 you could just enter the avast IS key in the avast free/pro and it would have transformed to avast IS ( just like transformers ;D ) The key decides what program you have/get
Have you tried the uninstall tools and then a reinstall?
avast 4.8 remover http://www.avast.com/uninstall-utility
avast 5.0 remover http://public.avast.com/~forejt/aswClear.exe
I was told where I purchased it to follow the link http://files.avast.com/iavs5x/setup_ais_eng.exe and dowload IS. When I tried to install it told me I had to uninstall 5 first.
I have tried a total uninstall and reinstall with no luck. I tried aswclear but not the uninstall-utility link. Will try that and let you know.
Thanks,
Lisa
When I tried to install it told me I had to uninstall 5 first.hmmmm.......may be it is different with IS since it have firewall and spam filter...... ???
I ran an uninstall from Control Panel. Then ran the aswClear program. Avast seemed to be gone from my system at restart, but the problems stayed. I did a complete new download of IS and installed it, but problems are still there. If I could figure out how to use the smileys I would have a Huh and a Cry!
Any other ideas?
The smileys 
so you don`t see them in there, hmmm…you probably need 20 post before they arrive…
What antivirus did you have before you installed avast ? have you removed it?
At this rate, I will have smileys in now time!!
I had Kaspersky and yes, it has been completely removed.
Did you run kaspersky removal tool after uninstall ?
Nr.17 here http://uninstallers.blogspot.com/
No luck, when I ran it message was :Kaspersky Anti-Virus was not detected". Too bad, I had my hopes up!
It may have removed some leftovers, so try a avast repair
For a repair of avast. Windows, Add Remove programs, select ‘avast! Anti-Virus,’ click the Change/Remove button from the pop-up window, scroll down to Repair, click next and follow.
I repaired and restarted computer…nope…Should I re-run everything in sequence? Run Kaspersky uninstall tool, uninstall Avast…?
you can try, and reboot between i am out of ideas…
Thanks Pondus. I will give that a try. Any idea where else I can go for help?
Well maybe someone in here have some ideas…
go back to avast free, it worked did it ?
Contact avast for help or money back
http://www.avast.com/contacts
I have tried to return to avast free, problems are still there. It is almost as if the first download changed settings somewhere and I have no idea how to return them.
this is perhaps some keys still in register, i got now black screen some time after restart pc, no one cleaners even autoruns.exe no help us(me and my pc), but im not sure what exactly cause is, in any way look at register keys cleaner, carefule sure, may be i will some test avast is 2
Thanks for your help, but it didn’t work either. I have sent a ticket to tech support, maybe they can offer some ideas. SO FRUSTRATED right now, have wasted almost 2 days trying to restore my system to what it was and I am no closer.