IMPORTANT NOTE: In July 2015 Avast GrimeFighter has been replaced by Avast Cleanup.

Avast GrimeFighter Overview and Free Download

Avast GrimeFighter is a tool for improving and optimizing the speed of your computer. GrimeFighter is the premium component of the Avast Antivirus, so you can get it even if you are using the free version.

This handy application basically does three things – 1) Improves your computer boot time; 2) Increases your computer speed; and 3) Provides you more free hard-drive space.

GrimeFighter free scan is available in all Avast antivirus solutions, Free Antivirus including. To run the free scan just open your Avast interface, go to ‘SCAN‘ and select ‘Scan for performance issues‘. You should get the following screen with the scan results. For the actual clean-up and speed-up process, you have to activate GrimeFighter.

Avast GrimeFighter 2017 Free Scan SummaryAvast GrimeFighter 2017 Free Scan Summary

GrimeFighter scans your Windows system for present ‘grime’ like malware, spyware, or intrusive toolbars. Also it scans for unnecessary programs which are being run at the start-up of your Windows, and optimizes your system settings to make your computer runs smoother. For making up more free space it scans for redundant files on your hard-drive.

You can download the free scan tool from the official Avast website or click on the button below.

Free Scan Tool

Avast GrimeFighter Pricing/Licensing

Unfortunately Avast GrimeFighter is not entirely for free. Though you can download the free scan tool but it only scans your computer (if it’s compatible) and shows you what the full version can do – as on the scan summary screen above.

If you want to actually clean and speed-up your computer, you have to purchase the full license (activation code). Which is on the other quite cheap if you consider how great and useful this product is. Pricing is as follows – 1-year license for $19.99; 2-year for $39.99, and 3-year for $109.99. 30-day money back guarantee as always.

Avast GrimeFighter 2017 Full License PricingAvast GrimeFighter 2017 Full License Pricing

If you decide to purchase the full license, just open your Avast and go to ‘Tools’ » ‘GrimeFighter’ » ‘Optimize My PC’ and select the subscription length.

Avast GrimeFighter Pop-ups and How To Disable Them

You can sometimes see the Avast GrimeFighter pop-up notification coming from your Avast antivirus. Usually it says ‘Performance Alert! We found X bits of evidence that Grime is slowing down your computer.‘ and has the blue button ‘Optimize My PC‘ at the bottom.

For some users these pop-ups can be quite annoying. If you want to get rid of these pop-ups just check our ‘Ultimate Guide to Disabling Avast Pop-up Notifications‘.

Example of the Avast GrimeFighter Pop-upExample of the Avast GrimeFighter Pop-up

Avast GrimeFighter Install/Activation

If you have already purchased the full license for Avast GrimeFighter, follow the instructions below to run it

  1. Go to Avast user interface » ‘Tools’ » ‘GrimeFighter’ » ‘Optimize My PC’ and GrimeFighter should start running, if not follow the next steps
  2. Click on the link ‘Do you already have a subscription?’
  3. Sign in to Avast Account with the e-mail you have used during the GrimeFighter purchase

Avast GrimeFighter Uninstall/Removal

Removing Avast GrimeFighter tool from your Avast antivirus is quite easy. It includes following steps

  1. Go to Windows ‘Control Panel’, find section ‘Programs’ and click on item ‘Uninstall a program’
  2. On the list of installed programs on your computer find Avast antivirus and click on ‘Uninstall/Change’
  3. On the Avast Setup window go to ‘Change’ and click on the ‘Continue’ button
  4. From the list of Avast tools select ‘GrimeFighter’, un-check it and click on the ‘Continue’ button
  5. Now you should get the message ’The product was successfuly updated’ just click on ‘Done’

Uninstalling/Removing Avast GrimeFighter ToolUninstalling/Removing Avast GrimeFighter Tool

Avast GrimeFighter Refund Process

As other Avast products, also the Avast GrimeFighter comes with 30-day money-back guarantee. If you for any reason (i.e. GrimeFighter is not working on your computer) want to refund your purchased license, follow these steps

  1. Submit a ticket to Avast Support at
  2. Select ‘Avast Customer Service’ » ‘I want to file a complaint about an Avast Product, Service, or other…’ » ‘I am not satisfied with the Avast product performance.’ » ‘Other Avast products’ » ‘Avast GrimeFighter’ » Skip product/VPS version » ‘Personal Computers’ » ‘Computers with the Microsoft Windows operating system’ » Select version of your Windows » In the message field simply ask for a refund.
  3. Someone from the Avast Customer Service will get back to you with the details of the refund process

System Requirements for Avast GrimeFighter

    • Operating system Microsoft Windows 8 / 7 / Vista / XP (any Edition, 32-bit or 64-bit)
    • Processor Intel Pentium III or above
    • 512 MB RAM memory or above
    • 600 MB free hard disk space
    • Internet access
    • Please note there are other specific system requirements which are automatically checked by GrimeFighter Free Scan tool

Other Avast Products for Windows

See the overview of the other Avast products for Windows.

Additional Notes

Although we have used Avast Free Antivirus 2019 screenshots in this article, these steps are also applicable for all Avast Antivirus solutions (i.e. also for Avast Pro Antivirus, Avast Internet Security, or Avast Premier) running the latest version available.

Steps are relevant for all Windows versions – Windows XP, Windows Vista, Windows 7, Windows 8, Windows 8.1 and Windows 10 (including Anniversary Update).

Please note from July 2015 Avast GrimeFighter has been replaced by Avast Cleanup.

Written by Paul B.

My name is Paul and I love Avast since the Home Edition v4.8 (2008). I am recommending it to all my friends, but I realized they don't know how to use it. So I started this site in order to help others getting maximum from this awesome antivirus. Feel free to contact me via Facebook, comments below or this form.

This article has 14 comments | Did we miss anything? Just let us know in the comments!

  1. Alan Keefe Reply

    I was one of the original investors for Jumpshot thru Kickstarter. I still use the cartoonish 32GB USB stick I received as a gift for contributing. I’ve used it 3 – 4 times a year with excellent results … until last week … total disaster. It totally trashed my Windows 10 computer. The computer would boot and could access the Internet but none of the other programs would run. I was not even able to reload any programs. Forced to reinstall Windows 10 (it was able to save all documents) and now I’m in the process of reinstalling all applications. Don’t need this grief. Needless to say, even though I have a lifetime subscription, I will not be running it again.

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