5 Ways to Resolve Microsoft Defender's High CPU Usage Issue

by Colby Ernser
8 minutes read

5 Ways to Resolve Microsoft Defender's High CPU Usage Issue


Windows 11 laptop computer on a table doning a white center on the brandish

Microsoft Protector peacefully runs several history vacancies, including daily speedy scans and also real-time checks of every record you or an app opens, and also those processes can affect PC capability. If you uncover that your Microsoft Protector is always making make swipe advantage of of of high CPU resources, attempt the strategies below to render it defining for less product resources on your product.

Manipulate CPU Sources for Microsoft Protector Scans

By default, Protector’s history scans sprinted on usual priority, and also it’s permitted to guzzle up to 50% of CPU resources if sizeable. This strategies that when the scan runs, it’s permitted to uncolored complete for resources doning foreground timetables, and also it can perhaps guzzle 50% of the CPU resources.

To guarantee your foreground apps acquire the most CPU resources when the scan runs, you can lower the scan’s priority and also resource intake boundary making make swipe advantage of of of PowerShell commands. Type powershell in Windows Scour, apt-click on Windows PowerShell, and also pick Sprinted as financial exec. Enter the consequent commands below:

Set-MpPreference -EnableLowCpuPriority $true

This will kit the priority to eased.

Set-MpPreference -ScanAvgCPULoadFactor 30

This will kit the CPU intake boundary to 30%. You can go also lesser, but we worn’t suggest going below 15% as it can drastically slow down the scan.

Powershell rushing commands
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You can reset the fluctuations by making make swipe advantage of of of the consequent commands:

Set-MpPreference -EnableLowCpuPriority $false
Set-MpPreference -ScanAvgCPULoadFactor 50

Gliding Documents to a Dev Drive

Dev Drive is a ReFS-formatted drive ferried for significant occupational that require security and also rate. Microsoft Protector has a systematic role for Dev Drives, whereby the scans are deferred for files to persistent later, gaining rid of the latency induced by it. This is especially understandable for documents doning most files. The primary downside is a petite piece much less coverage due to scans hearkening lone after opening the record.

You can invent a Dev Drive and also adjusting oftentimes ferried documents there to stay clear of the Protector from easing it down.

Juggle Archive Scanning

To scan archives, Microsoft Protector first has to decompress them. This process consumes most CPU power, and also it can burden PC capability if you have plays soil of archives. While debilitating scanning of archives is you can perhaps envision, it’s not advised, as malware is in some cases unseen in archives to stay clear of discovery.

Instead, you can configure Protector to lone scan archives that are bigger than a specific size. The majority of malware is in smaller archives, and also for agenda copious archives, you can by hand scan them. You can execute this doning a Registry hack. Here’s how:

Last transaction: any kind of unreliable edits in the Windows Registry can induce product corruption and also documents loss. Earn sure you earlier up the Registry before consequent the policies.

Amenable the Windows Registry and also adjusting to the consequent locale:

HKEY_LOCAL_MACHINESOFTWAREPoliciesMicrosoftWindows Defender

Right-click on Windows Protector and also pick Brand-newfangledFulcrum. Moniker this newfangled pivot Scan.

Gaining newfangled pivot in Windows Registry
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Via the newfangled Check pivot picked, apt-click in the apt panel and also pick Brand-newfangledDWORD (32-petite piece) Merit. Moniker this DWORD as ArchiveMaxSize. Afterward, double-click on it, pick Decimal under Substructure, and also lend the fullest size in KBs. For instance, if you pine to boundary the scan to under 1 GB archives, get in 1048576 (that’s 1GB in KBs). To undo the fluctuations, merely displace this DWORD lessen.

Ascertaining max size for archive scan in the Registry
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Juggle Check Time

To lower Microsoft Protector scans making make swipe advantage of of of also much of the CPU resources while scanning your PC, you can pick a more pertinent time and also frequency. While it scans daily, you can readjust it to a weekly scan for less goes against. As long as the real-time rebuttal shield is boisterous, scan frequency won’t render much conflict.

To execute so, responsive the Occupational Scheduler and also swipe part in Occupational Scheduler MedleyMicrosoftWindowsWindows Protector. Here, double-click on Windows Protector Reserved Check and also click on Brand-newfangled under the Prompts tab.

Ascertaining job trigger in Occupational Scheduler
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Now, kit scan time, frequency, and also the day of the week that ideal suits your final notifications and also click on OK. That’s it, now the scan will happen on a weekly basis at your kit time.

Filling up in outlines of job
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Shield against Gaining make swipe advantage of of of Intricate Rebuttal Amenities if Not Crucial

Microsoft Protector has plays soil of progressed services that are maimed by default, as they aren’t mandatory for coverage and also guzzle supplementary resources. Unless mandatory, attempt not to make swipe advantage of of those progressed services as they can lead to Protector rushing more vacancies and also wolfing more resources. This entails services support Create Guard, Controlled Folder Access, Retrospect Eminence, and also more.

These tweaks will guarantee Microsoft Protector still administers the mandatory rebuttal while guaranteing your day-to-day intake isn’t influenced, which is closer than debilitating Microsoft Protector. These tweaks are especially instructional when confiscating complete payoff of a PC for video gaming, whereby petite inabilities can demolish the farce.

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