My Avast (free version) was running fine. But after running ccleaner and fixing registry now I am getting this message…
The instruction at 0x773775bc referenced memory at 0x00000050. The memory could not be read.Click on OK to terminate the program
Can anybody tell me how can I fix the problem?
Try a repair via Programs and Features ( click to uninstall then click repair and reboot when completed ) if that fails then you may have to re-install avast.
The latest version of Avast is mucking up all manner of settings within windows and other programs, CCleaner included (can no longer use it to edit start-up items or scheduled tasks for example). You will probably find you cannot change or create new power plans as well, another problem I’ve found on all the PC’s I’ve installed Avast on (so it’s a programming issue with Avast, not our hardware).
This still has not been fixed (after a few weeks now) so I can only suggest finding the previous unbugged version and going back to that (ignore any program update prompts) until Avast sort this mess out.
Actually I tried this. My O/S is Win 7 I did…
Control Panel>Uninstall a program>“Avast Free Antivirus”>Repair>Continue
But nothing happened. For a very little time I see a screen and it disappear within fraction of a second.
The latest version of Avast is mucking up all manner of settings within windows and other programs, CCleaner included (can no longer use it to edit start-up items or scheduled tasks for example). You will probably find you cannot change or create new power plans as well, another problem I've found on all the PC's I've installed Avast on (so it's a programming issue with Avast, not our hardware).This still has not been fixed (after a few weeks now) so I can only suggest finding the previous unbugged version and going back to that (ignore any program update prompts) until Avast sort this mess out.
Yes. Today I upgraded the software and then used CCleaner. Hell! My Avast was working before running CCleaner. Even after Avast upgrading. I think CCleaner removed any important file which is necessary to start Avast each time.
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Some users, myself included, have found the need to make “exclusions” in CCleaner.
I had the similar issues had found excluding avast in CCleaner fixed my problems. 
Indeed CCleaner is not the best avast! cleaner
I don’t have problems with Avast Free and CCleaner.
I am using CCleaner 8-10 times per day.
Paranoid ;D ;D