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Old Laptop Running High Memory Usage from Antimalware Service Executable - What's Up?

August 29, 2025 3 answers
Asked by CuriousCoder88
I found an old laptop that used to belong to my grandparents, and I've noticed that a program called Antimalware Service Executable (which I think is part of Windows Security since I haven't installed anything else) is constantly using 60% of the memory (which I assume is RAM). Any thoughts or solutions for this issue?
antimalware high memory usage laptop performance malware System Operations Windows Defender

Answers

TechGuru99
The Antimalware Service Executable is indeed part of Windows Defender, and it can be quite resource-intensive, especially if it's continuously scanning. If your laptop has an SSD, that could help reduce the load. Additionally, consider scheduling scans during off-hours when you're not using the laptop too much.
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HelpSeeker42
Running a full scan with Windows Defender might be a good move. It will help determine if the process is legitimate or potentially malicious, and it may also ease the resource usage on your system.
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MemoryMaster12
It's common for Windows Defender to use a lot of resources when scanning. Upgrading the RAM or switching to an SSD can significantly improve performance, especially if you're using Windows 10 or 11.
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