Windows Defender Full Scan 100% CPU Usage?

[Peeratat]

I just did a windows defender full system scan on a new PC with a fresh install of windows.

It's running on a pretty fast SSD with a 14900k. But then I noticed in the task manager the CPU usage is at 100 percent?

Is this normal?

[Dr.Shadowds 🐉]

Yes, if you want you can make your scan take longer but usage be lower, but I figure you want it to go fastest as possible to doing it scam rather than slowing it down.

[metamec]

When a full system scan hits compressed files, yes, it's normal. Only when launched manually though. When a full system scan is scheduled, the cpu usage is throttled by default.

Lookup the Set-MpPreference command if you're interested in changing any of the defaults. For example:

Set-MpPreference -ThrottleForScheduledScanOnly $false

That will throttle the CPU for manual (full) scans too.

[Peeratat]

Okay. Got it. Thanks!