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Consumer Products => Avast Free Antivirus / Premium Security (legacy Pro Antivirus, Internet Security, Premier) => Topic started by: jazzlover on February 04, 2020, 04:19:47 PM

Title: PC suddenly operating very slowly - Avast Antivirus service peaking at 100% CPU
Post by: jazzlover on February 04, 2020, 04:19:47 PM

About a week ago my PC suddenly became slow and unresponsive with web pages taking 2 to 3 seconds to open.  Checking Task Manager I see that 'Avast Antivirus Service is often peaking to 87% CPU usage meaning that my overall CPU usage is at 100%.  Similarly I'm seeing 60%+ memory usage with Avast taking about 1,400 MB.  Has anyone else seen this problem suddenly occurring - I am running Windows 10 on a reasonably fast desktop.


Thanks in anticipation.

Title: Re: PC suddenly operating very slowly - Avast Antivirus service peaking at 100% CPU
Post by: bob3160 on February 04, 2020, 04:47:02 PM

Try the following,

Repair & Clean Install of Avast -> https://goo.gl/t7aJGq
Repair Avast:
Open the Avast User Interface > Menu > Settings > Troubleshooting > Repair App. > Restart the Computer or,
Control Panel> Program and Features (Add/remove program)>Select Avast> Select Repair. Reboot when completed
https://www.avast.com/faq.php?article=AVKB204

If Repair doesn't fix the problem, try the following:
If your Avast settings are not the default settings and you want them restored after the Clean Install, follow this before removing Avast.
https://goo.gl/TXjM7h
Clean Install of Avast:
https://goo.gl/4Ptzkf
If you need additional help with the Clean Install, watch this:
https://youtu.be/p-h3myRD51A

Title: Re: PC suddenly operating very slowly - Avast Antivirus service peaking at 100% CPU
Post by: jazzlover on February 04, 2020, 06:38:35 PM

Hi - thanks for that Bob.  The repair seems to have worked.  :)

Title: Re: PC suddenly operating very slowly - Avast Antivirus service peaking at 100% CPU
Post by: bob3160 on February 04, 2020, 06:46:13 PM

Quote from: jazzlover on February 04, 2020, 06:38:35 PM

Hi - thanks for that Bob.  The repair seems to have worked.  :)

Good to hear. :)