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 2015 Free Scan SummaryAvast GrimeFighter 2015 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 2015 Full License PricingAvast GrimeFighter 2015 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

Video Manual Explaining Purchase and Activation Process

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 https://support.avast.com/Tickets/Submit
  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.


Although we have used Avast Free Antivirus 2015 screenshots in this article, Avast GrimeFighter is available in all Avast antivirus solutions (i.e. also Avast Pro Antivirus, Avast Internet Security, and Avast Premier).

This article has 6 comments | Did we miss anything? Just let us know in the comments!

  1. Katupa Chongo Reply

    When launching GrimeFighter, when I click Optimize my PC, the programme prompts me to Reboot and Run Now. When it reboots, it sedates the computer to begin the process but immediately stops for lack of internet line disconnected on rebooting by the programme. Reconnecting internet line requires aborting launched GrimeFighter starting a cycle.

  2. Katupa Chongo Reply

    Order ID: 12265532660 Order Date: 22 January 2014

    I can’t get grimefighter to work. When click optimize my PC, Running requires rebooting PC, After reboot Grime fighter can’t run because internet (Wireless) can’t connect automatically. I use a dongle to connect to MTN(internet provider)

  3. Mariana Errandonea Reply

    Adquirí GrimeFighter por internet, efectuando mi pago con VISA y aún no he recibido el mail con las instrucciones de instalación, mismo que aquí está en inglés, ne gustaría recibirlo en español. Como entiendo que la oferta me habilita para dos PC, desearía saber si es así, para tenerlo en la PC de mi casa y en la netbook. Quedo a la espera de pronta respuesta
    Muchas gracias

  4. steve Reply

    I bought and now can not get any to tell me how to install or the instalation email

    • getavast.net Reply

      Hi Steve,

      Have you tried steps in this article? See paragraph ‘avast! GrimeFighter Install/Activation’.

  5. Junior Reply


    Avast lança GrimeFighter Cleanup Utility PC não se encontra gratuito, ou para teste?

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