6 Fixes to Anti Malware Service Executable High CPU Usage 2021

Method 1:

I would suggest you to perform a Clean Boot on the PC and check if that helps. Refer the article How to perform a clean boot in Windows. https://support.microsoft.com/en-in/help/929135/how-to-perform-a-clean-boot-in-windows

Performing a clean boot will start the computer with minimal set of drivers and programs, to determine whether a background program is causing the issue. Some of the Startup programs will not load after performing a clean boot on the computer. However, that functionality will return when you reset the computer to start normally after finishing the troubleshooting.

Note: Please refer the section Reset the computer to start normally after clean boot troubleshooting to boot the computer in to normal mode after troubleshooting.

Method 2:

The error is mainly due to its Windows Defender real-time protection feature. Kindly follow the steps to change Windows Defender’s schedule to fix it.

1. Press Windows key + R. This will open Run. Alternatively, you can go to Start and search for Run.
2. In Run dialog box, type taskschd.msc and hit enter.
3. Navigate to Task Scheduler Library > Microsoft > Windows > Windows Defender.
4. On the right hand pane, double-click on Windows Defender Scheduled Scan.
5. On the General tab, uncheck the option Run with highest privileges.
6. Click on Conditions tab and uncheck all the options.
7. Click on OK.

Windows Defender May Be Enough //

So what are the downsides of Windows Defender? Its bare-bones nature means you can’t schedule scans and have to manually opt to run one instead, which is something you may forget to do as often as you should. You’ll also miss out on features like sandboxing— which allows you to test programs you’re unsure about—along with VPNs, password encryption, and various other tools that help keep you safe online. //

When it comes to scanning for, detecting, and removing threats—any of the free or paid options will do the same job. Some of the extra features like password generation, sandboxing, VPNs, etc., may make you safer—and having them all handled by one program places less of a burden on your PC. But those features may not be something you’ll use. Sandboxing can be an incredibly useful tool when it comes to keeping your PC safe, as it allows you to install and run programs in a fenced-off area of your computer while you test them out. However, if you’re the kind of person who never installs programs you don’t completely trust, you don’t need a sandboxing program.