antimalware service executable is using to much memory

No it didn't work I really don't know why this is happening I even formatted my computer but it's still the same

I tried everything on this website but still couldn't. The funny thing is that when I type the DisableAntiSpyware code in Registry Editor, it automatically deletes itself. I guess Microsoft doesn't want me to do this.

Hello,

See if this fix helps you:

https://www.kapilarya.com/fix-antimalware-service-executable-high-memory-usage

Let us know if this helps!

Note: Included link in this reply refers to blog post by a trusted Microsoft MVP.

It is not unusual to observe high memory usage by the Antimalware Service executable when Microsoft Defender is running a Full Scan, especially while attempting to use the computer during the scan. Until Microsoft Defender service completes this task it will continue to consume high memory and CPU usage. To avoid this issue, run a scheduled scan at a time when you're not using the computer.
 
If you're not running a scan, according to Ramesh Srinivasan [VM], Volunteer Moderator at Microsoft Answers in this topic..."It's normal to see Defender consuming200-300 MB of memory when no scans are running*. If it consistently uses more Disk I/O and memory, it could be because another process is triggering the on-demand scanner repeatedly.*"
 
If you're not not running a Full Scan when this happens, try this.

1. Temporarily disable Real-time protection in Virus & threat protection section.
2. Open Task manager and check if the memory has returned to normal.
3. If so, go back and reenable Real-time protection.

• How to Enable or Disable Microsoft Defender in Windows 11

These are some more resources with additional information which address this issue.

• Troubleshoot performance issues related to real-time protection: Common reasons for higher CPU utilization
• Fix: Microsoft Defender Antivirus Service High Memory Usage
• How to Stop Antimalware Service Executable from High CPU Disk Usage

Hi Kaan,

I hope you are doing well!. I'm Jhun, an independent advisor. Sorry to hear that your having a problem with this. Please let me assist you. Let's check other options to minimize the memory usage.

First, let's try to disable Real-Time protection temporarily.

• Go to settings > Privacy and Security > Windows Security > Virus & Threat Protection
• Click Manage settings under Virus & Threat Protections settings and Turn off the real-time protection.

If the memory usage drops, this will confirm that it's related to the real-time scanning, from here, you can decide to adjust the settings or switch to a lighter third-party antivirus.

Next, check for Scheduled Defender Scans, because there are times that your antivirus doing some routine scanning and may consume more memory in the background. To check, here's the instruction.

• Press Windows + R and type taskschd.msc and hit Enter
• Go to Task Scheduler Library > Microsoft > Windows > Windows Defender
• Right click Windows Defender Scheduled Scan > Properties. Under the conditions tab, uncheck "Start the task only if the computer is on AC power"

Please let me know how it goes.

Best regards,

Jhun