Avastsvc.exe High CPU Usage Antivirus Fix

This article is about avastsvc.exe high CPU. There are many things you can do to reduce CPU usage by Avast Antivirus. Avast antivirus is the most trusted and used antivirus around the globe. This article says fix for Antivirus Avastsvc.exe High CPU Usage issue. Using these antivirus helps to keep your personal information also safe.


It is the collection of high-end technologies that work in perfect synergy to protect your valuable data and system from deadly viruses, but why does Avast consume such a massive amount of CPU?

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The reasons for consuming a vast amount of CPU are various.


For example, it performs real-time operations a lot, such as virus scanning, computer cleanup, background scanning, and so on.

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It continuously protects your pc against viruses, spyware, and other threats by instantly checking files anytime you or your pc uses them. And we all know real-time operations can consume high CPU.

How Can We Fix Antivirus Avastsvc.exe High CPU Usage?

There are many things you can do to reduce avastsvc.exe high CPU usage by Avast Antivirus. Some of the most effective methods are explain below:

Method 1 Update Avast Antivirus To Its Latest Version

It is always recommend to keep Avast’s antivirus application and Virus definitions to its latest version as specific old versions of Avast become unresponsive. Steps for updating are given below:

windows update

  1. First of all, users have to go to your Windows taskbar’s notification area, right-click on the Avast icon, select Update>Engine and virus definitions(for virus definitions), right-click on the Avast icon, and then select update>Program from the popped-up list.     
  2. If somehow your Avast Antivirus doesn’t start checking for updates automatically, then Select General>update>Check for updates.   update
  3.   Now, your Avast Antivirus checks for updates and install Virus definitions/Application updates.
  4. After the update is complete, you see the status showing ‘Virus definitions are up to date and ‘Your application is up to date.’          restart-computer               
  5. Now, in the end, you may have to restart your pc. If prompted, click on restart now to use new updates.
  6. Now check for avastsvc.exe high CPU usage

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Method 2 Delete/Remove The Cleanup Tool In Avast

Avast cleanup is used to free the allocated resources by background apps in real-time. As it is involve in real-time operations, it can be heavy on the processor.

  1. First, you must press the ‘Windows key and ‘X’ key simultaneously and select ‘Program and features from the menu.
  2. From the list, search Avast clean up and right-click on it, then select uninstall from the menu.
  3. After step 2, you would be prompt for permission by User Account Control, click yes.remove tool
  4. After step 3, Avast cleans up setup appears, select uninstall from two options.
  5. If prompted for confirmation, select uninstall.
  6. Now, wait while setup is removing the cleanup from your pc.laptop
  7. Avast cleanup is finally removed from your pc.
  8. Now check for avastsvc.exe high CPU usage.

Also see: Why Does Avast Keep Turning Off Automatically? 4 Easy Fixes

Method 3 Repair Your Avast Program – Avastsvc.exe High CPU

Sometimes an error occurs while installing, resulting in high CPU usage. Simply repairing the program might do the job.

  1. Firstly, you have to ensure that no other antivirus is running on your pc.
  2. Then, you have to right-click on the windows start button and select Apps and features from the appeared menu.
  3. Now ensure that Apps and features are selected in the left panel, then search for your version of Avast Antivirus, select it, and click uninstall.repair
  4. Now, you would be prompted for permission by User Account Control, in which you have to click Yes.
  5. Click Repair when the Avast setup wizard appears.
  6. Now, It asks for authorization. Click Yes.
  7. Now check for avastsvc.exe high CPU usage.laptop
  8. You have to wait for some minutes until it repairs your Avast Antivirus.                                                             
  9. After completion, click, and you might have to restart your pc.
  10. Now check for avastsvc.exe high CPU usage

Method 4 Avastsvc.exe High CPU Usage Then Stop The Usage Or Disable Mail Signature

Sometimes a hindrance in Avast Antivirus performance and high CPU usage is caused by the Mail Shield feature, so that we will be disabling this feature in this step.

  1. Firstly, open your Avast antivirus and from the Menu select settings.
  2. Now, first, select Protection and then choose Core shields.email signature
  3. Then, Search for Configure shield settings and select Main shield.
  4. Uncheck every option in this tab as we did for ‘add a signature to the end of sent emails in the following image.
  5. Now check for CPU usage 

See also: Stop Avast Browser Opening On Startup

Method 5 Stop Avast Screensaver Scanning 

 Most of the time, when Avast Screensaver stops scanning, it won’t show up in the Avast interface.-Sometimes, Avast screensaver scanning seems to use the CPU even when it is not running. The following steps contain the solution.

  1. First, right-click on any file located on your computer and scan that file with the avast Menu.scan
  2. A window will pop up showing scan results; then, you will be to the scan running currently. 
  3. Now stop the Avast screensaver scan by locating it.settings
  4. Now check for avastsvc.exe high CPU usage


The above article contains some of the most effective methods that can help you reduce avastsvc.exe high CPU usage by Avast Antivirus bringing it to normal use. We hope it will be informative for our readers. 

See Also: Antimalware Service Executable High CPU Usage | 4 Simple Fixes

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