Windows 10: Windows Defender Full Scan 100% CPU (Win 10 Pro 1903 build 18362.778)

Discus and support Windows Defender Full Scan 100% CPU (Win 10 Pro 1903 build 18362.778) in Windows 10 Ask Insider to solve the problem; Hi, I am trying to run a full scan on my PC and don't want it running at 100% cpu usage. I tried Set-MpPreference | select ScanAvgCPULoadFactor with... Discussion in 'Windows 10 Ask Insider' started by /u/zeeblefritz, Apr 16, 2020.

  1. /U/ZEEBLEFRITZ
    /u/zeeblefritz Win User

    Windows Defender Full Scan 100% CPU (Win 10 Pro 1903 build 18362.778)


    Hi,

    I am trying to run a full scan on my PC and don't want it running at 100% cpu usage. I tried

    Set-MpPreference | select ScanAvgCPULoadFactor

    with values of 25 and 50 and Defender still uses 100% of my cpu. I have tried rebooting after applying the new values as well and it still does not work. Does anyone know how I can resolve this?

    submitted by /u/zeeblefritz
    [link] [comments]

    :)
     
    /u/zeeblefritz, Apr 16, 2020
    #1
  2. NICK_CA
    Nick_Ca Win User

    Windows 10 1903 100% disk usage

    Dell Inspiron 3650 desktop less than 2 years old
    Used mostly for news, e-mail, running Bionic Manager for running SETI@home.
    Problem started about 4 weeks ago.

    Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz
    Ram 16 gb 1600, 2RX8, 4G, DDR3L, U
    AMD Radeon (TM) R9 360 2 gb video card
    HARD DRIVE, 2T, S3, 7.2K, 512E, SGT-GRDABP2 Seagate drive

    win 10 pro 1903 (OS Build 18362.207 )

    Keep getting 100 % disk usage .
    Some times also goes to 100 cpu usage.
    Ran dell hardware test passed
    Tried safe mode same issue 100 % disk usage .
    Tried reset keep my files - same 100 % disk usage .
    With no additional apps installed
    Took system under warranty into Bestbuy - Cant find any issue with pc ? They had system for 3 days.
    Tried reset clean drive - - same 100 % disk usage .
    Download win 10 ISO from Microsoft web site.
    Formatted drive, installed Windows 10 1903 home.
    Used key to upgrade to windows 10 Pro same 100 % disk usage .

    Only with windows 10 application on pc same issue 100 % disk usage .

    Any suggestions ?

    Thank You
     
    Nick_Ca, Apr 16, 2020
    #2
  3. DALCHINA
    dalchina Win User
    dalchina, Apr 16, 2020
    #3
  4. EBOSU
    Ebosu Win User

    Windows Defender Full Scan 100% CPU (Win 10 Pro 1903 build 18362.778)

    Windows Defender full or custom scan maxes cpu

    Hello!

    I've been having issues with Windows Defender on Windows 10 for a while now. It started sometime during the summer, though I can't pinpoint the exact date. When I run a full or custom scan, Antimalware Service Executable will quickly start jumping up to
    100% cpu and it makes my computer basically unusable for the duration of the scan. It's not a constant 100%, but while it does go up and down it spends a lot of time at or near 100%. It doesn't matter what drive I scan, this issue crops up a few minutes in.
    The automatic scheduled scans presumably work alright, since I've never actually noticed them happening.

    It's not an issue with background processes, because when Defender is the only thing running it will just hog more %. The highest I've seen it go is 96% cpu for Defender alone. Windows Defender is my only antivirus, so it's not a conflict either.

    I've tried googling for solutions and haven't really found anything helpful. I added an exception for MsMpEng.exe, but that did nothing. I can't set an affinity for this process, though some posts suggest that might be normal. I've updated Windows and everything
    is the most current version available.

    I'd really appreciate any suggestions for resolving this. I need to be able to scan my whole PC, not just a quick or scheduled scan.
     
    Ebosu, Apr 16, 2020
    #4
Thema:

Windows Defender Full Scan 100% CPU (Win 10 Pro 1903 build 18362.778)

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