I maintain 6 computers for my wife’s small office. All run Avast 4 Professional on paid licenses; all are WinXP SP3.
One of these machine was extremely slow. TaskManager showed that Avast4 was using huge amounts of virtual memory, much more than any of the other 5 nominally-identical machines, or my home machine. I was unable to uninstall until I used ASWClear5.exe in Safe Mode.
I installed Avast5 home version, since I had a copy, and this seems to have solved the problem. But even after entering the license code it still thinks it’s the home version. How do I convince it to become the Professional version that we paid for? I need to set up the scheduler since I don’t get to her office often.
Converting the free product to pro does on occasion have problems (especially when you are also switching version numbers). Try a repair of avast. Add Remove programs, select ‘avast! Anti-Virus,’ click the Change/Remove button and scroll down to Repair, click next and follow.
If that would suggest trying a couple of reboots as on some XP systems it doesn’t take right away on the first boot.
If that doesn’t work it may require a clean reinstall of avast pro ensuring you run the uninstall utility for 4.8 also, see below:
Download the latest version of avast, 5.0.594 http://files.avast.com/iavs5x/setup_av_pro.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, aswClear5.exe find it here and save it to your HDD (it has uninstall tools for both 4.8 and 5.0).
Now uninstall (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 4.8 if previously installed and then for 5.0, once complete reboot into normal mode.- 3. install the latest version, reboot.