However, a more focused third-party antivirus software may work better. We’ll use the accessible and built-in Windows Defender to conduct a system scan. If you notice high CPU and disk usage, you may also be the victim of a cyberattack. Some malicious scripts and applications may be able to cause Windows Defender memory usage to go up. We recommend running a security scan to ensure that your system is not currently infected by malware. Use the following solutions to fix high CPU usage by the Antimalware Service Executable. Our methods were written using the latest Windows 10 update. How to Fix High CPU Usage By MsMpEng.exe in Windows 10 So, stopping antimalware service executable from scanning its own folder is one of the ways you can make it use less CPU. The self-scanning function of Windows Defender directory.Misconfigured or corrupt Windows system files.However, other possible causes of the Antimalware Service Executable (MsMpEng) using high CPU also include: In addition, the antimalware service executable uses too much CPU because it scans its own folder - C:\Program Files\Windows Defender. High CPU usage can cause your system to experience frequent hanging, lagging, and delayed access/response. Full Scan: Windows Defender conducts a full scan of all files, either scheduled when the computer wakes up or when connected to a network. ![]() This is especially common on low-end computers. This feature may drain your PC resources. The Windows Defender real-time feature constantly scans files and connections, etc.
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