Learn how to change, increase, reduce, limit or set a CPU usage limit for Windows Defender scans in Windows 11/10 using PowerShell, GPEDIT or REGEDIT.

On Windows 11, you can use PowerShell to change settings and run quick, full, and custom virus scans with the Microsoft Defender Antivirus, and in this guide, you'll learn how.

Click Windows Components, and then select Microsoft Defender Antivirus. 6. Scroll down to the bottom of the list and look for Turn off Microsoft Defender Antivirus .

A weird bug has been discovered in Windows Defender's real-time notification system that causes it to suck up CPU resources. Run this free utility to see if it's affecting your rig.