5 Ways to Solve the Problem of Avast Using Too Much CPU

Avast is one of the most popular antivirus software providers in the world. However, like any other antivirus program, Avast has its fair share of issues. The most common problem users face with Avast is that it uses too much CPU and slows down their computer. This article will show you how to troubleshoot this issue and fix it once and for all

Is Avast Using Too Much CPU?

If you’ve been using Avast for a while, you may have noticed that it uses up a lot of CPU. This can be especially bothersome if your computer is an older model and has less room to breathe under the hood.

However, there are several reasons why Avast might be using more processing power than it needs to. In this article we’ll go over some possible causes of high CPU usage in Avast and how you can fix them:

Avast Service High CPU Usage — What You Should Do

If you are experiencing a high CPU usage from the Avast Service, then you may have malware on your computer. The reason for this is that malware can cause processes to run in the background and use up your CPU power.

If you would like to get rid of the malware and stop Avast from using high CPU resources, follow these instructions:

  • Open Control Panel > Programs and Features > Uninstall a program or Add/Remove Programs (Windows 10)
  • Select “Avast” from the list of programs and click on “Uninstall/Change”
  • Once avast has been uninstalled, restart your computer

1. Scan Your Computer for Viruses

  • Run a Virus Scan

If you have an antivirus program installed, it’s possible that Avast is running a virus scan. This is probably the reason why your CPU usage is high.

If you don’t have an antivirus program, we recommend installing one and running a full system scan to see if any viruses or malware are present on your computer. Then remove any viruses or malware found by following the steps of our guide on how to remove viruses and malware from your PC (Windows 10).

2. Disable the Unnecessary Features of Avast

After disabling the unnecessary features of Avast, you should see a significant reduction in CPU usage. If that doesn’t work for you, try using a different antivirus software.

As an alternative to Avast, consider these options:

• AVG Antivirus Free Edition

• Bitdefender Antivirus Free Edition

• Kaspersky Free Anti-Virus (for Business)

3. Update Avast or Reinstall it

  • Update Avast Antivirus

If you have an older version of Avast, it might be time to update it. You can find all the information you need on how to update your antivirus software here.

  • Reinstall Avast

If updating doesn’t work, reinstalling is another option that could help solve this problem. This is especially true if you recently installed a new version or upgraded some other piece of software on your PC. You can uninstall Avast by following this guide: How do I uninstall Avast?

  • Update Avast Definitions (AVG)

If updating doesn’t fix the problem, we recommend refreshing your AVG antivirus definitions by following these steps: How do I refresh my AVG antivirus definitions?

4. Disable the Avast Behavior Shield

  • You can disable the behavior shield in the settings.
  • You can also disable it in the antivirus settings.
  • Or, you can disable it on a per-shield basis: just open up one of your shields and click “Turn Off”. This will prevent Avast from scanning that particular file, but not overall CPU usage or slowdowns caused by other shields.

5. Roll Back Avast to a Previous Version

The Restore feature in the Avast user interface can roll back to a previous version of Avast. You can also roll back your computer to a previous state, or reinstall Avast from the installation disc.

If you have a paid license, you can also restore your computer to a previous version of Avast by downloading the latest installer and running it. Avast will roll back to the last backup available on your system for free users.

If you have found that the avast service high cpu alert is popping up again and again, there are several things you can try to fix this problem. Check out the article to find out what they are.

  • Check for viruses
  • Disable the unnecessary features
  • Update Avast or reinstall it
  • Disable the Behavior Shield
  • Roll back Avast to a previous version


If you have found that the avast service high cpu alert is popping up again and again, there are several things you can try to fix this problem. Check out the article to find out what they are.

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