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Deetz66's avatar
Deetz66
Copper Contributor
Jun 10, 2026

Windows 11 unable to uninstall Avast

Hi

I was using paid version of Avast One 64 bit, but after a year I cancelled membership.  .I installed Avast clear that is supposed to work to completely uninstall  but was still getting popups from Avast constantly. Then I tried another  uninstaller. It seemed to fix the problem; that was a few months ago .

Now the popups are back claiming I have a virus, and if I renew subscription, they will run antivirus. The popups are constant ; such that I can't use the computer to do anything. I am quite happy with Windows Defender. How do I get rid of Avast popups? I would certainly appreciate any help anyone could offer.

 

 

3 Replies

  • Audret's avatar
    Audret
    Iron Contributor

    If popups occur in browsers, reset browser settings or reinstall the browsers to remove any residual adware or malicious scripts.

  • Syamter's avatar
    Syamter
    Iron Contributor

    Since you've already tried a different uninstaller, remnants are likely still present. The most reliable method is to use Avast's own tool, avastclear.exe, but it must be run in Safe Mode for a complete cleanup.

  • Hello, I’m Reema. I’d be happy to help you remove Avast completely.

    If normal uninstall doesn’t work, I can guide you through advanced cleanup steps.