This will check every single file on your drives to ensure no threats can be hidden. Type in Windows Security and launch it from the search results.You can also bring it up with the Windows S keyboard shortcut. Open the search bar in your taskbar by clicking on the magnifying glass icon.Use the following steps to scan your PC for malware using Windows Defender: 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. Protection in Realtime: While running in the background, it actively scans programs and files and carries out the appropriate actions whenever it detects anything malicious.The main reason that antimalware service executable uses too much CPU is that it runs constantly in the background to provide: Some users also reported experiencing MsMpEng.exe high disk usage. However, many user reports on Microsoft support forums have shown that sometimes the MsMpEng.exe can also cause disproportionately high CPU and Memory usage. It's closely tied to Windows Defender's real-time protection feature against malware and cyberattacks. When it runs, the Antimalware Service Executable also ensures that Windows Defender provides real-time protection against viruses, malware, and cyberattacks. The MsMpEng.exe runs the Windows Antimalware Service Executable to enable Windows Defender to monitor your PC for potential threats continuously. Why does Antimalware Service Executable use High CPU When an antimalware service executable detects a virus or other malicious attacks, it deletes them or quarantines them. Also known as msmpeng.exe, the antimalware service executable Windows process runs in the background, so it can scan files and programs from time to time.
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