cant unistall avast- doesnt update

hi
my problem is that my avast doesnt update for about 1-2 months
i tried to unistall it and istall it again but my pc cant unistall it and shows a message - avast , setup fatal error…
how can i unistall it or fix it without unistall?
i apreciate any help

I suggest you do a clean reinstall:

  • Download the latest version of avast, 7.0.1426 http://files.avast.com/iavs5x/avast_free_antivirus_setup.exe and save it to your HDD, somewhere you can find it again (if you didn’t save your last download). Use that when you reinstall.

  • Download the avast! Uninstall Utility, aswClear.exe find it here and save it to your HDD (it has uninstall tools for 5.x, 6.0.x and 7.0.x).

    1. Now uninstall avast! (using add remove programs, if you can’t do that start from the next step), reboot.- 2. run the avast! Uninstall Utility from safe mode, first for 6.x if previously installed and then for 7.0, once complete reboot into normal mode.- 3. install the latest version, reboot.

The above instructions presume you are using avast free.