Windows 10: Defender antivirus could not completely remove a potential threat. Ran Defender offline,...

Discus and support Defender antivirus could not completely remove a potential threat. Ran Defender offline,... in AntiVirus, Firewalls and System Security to solve the problem; Defender antivirus could completely remove a potential threat. Ran Defender offline, protection history is full of items dating back to February. What... Discussion in 'AntiVirus, Firewalls and System Security' started by PhilipHedley, Jun 5, 2021.

  1. PHILIPHEDLEY
    PhilipHedley Win User

    Defender antivirus could not completely remove a potential threat. Ran Defender offline,...


    Defender antivirus could completely remove a potential threat. Ran Defender offline, protection history is full of items dating back to February. What are all the items in Protection History? Can they be cleared? Have they been quarantined?Is my PC safe as Defender antivirus still says it couldn't completely remove a potential threat?Is there an idiots guide which explains the operation and results of the offline scan as I have no idea?

    :)
     
    PhilipHedley, Jun 5, 2021
    #1
  2. LELOUCH.LAMPEROUGE
    lelouch.lamperouge Win User

    WINDOWS DEFENDER IS NOT REMOVING THREATS

    I'm having a problem with Windows Defender the threats found after I ran a full scan that last maybe around 10 hours cannot be removed by windows defender. I selected the remove option and it shows processing but after a while
    the threats are still listed and active. I already ran a offline scan and a quick scan but neither fix the problem.

    I already ran a secure boot and see if third-party apps are causing the problem but nothing works the threats are still listed and active. I checked the location of the file and manually deleted it even on my recycle bin but
    the threats are still there and labeled as active. This very annoying. I think this is an error in the windows defender part because I installed Malwarebytes and ran a full scan which took a couple of hours and found nothing because like I've said I have deleted
    the file location where the threats are.
     
    lelouch.lamperouge, Jun 5, 2021
    #2
  3. SLARTYBART
    Slartybart Win User
    Windows Defender Stuck on Removing Severe Threat


    Sure, you can put Windows Defender Offline on a jump drive.

    But the emphasis of my post is that you no longer have to do that ...
    you can launch Defender Offline from Settings > Update and Security > Defender > Defender Offline
    as described here: Defender Offline

    simrick (safe mode Adwcleaner with a question about the reg entires) and Borg (tdssKiller, Rkill, possible manual reg entries removal) have offered other suggestions - it helps troubleshooting if you always follow the order of the suggestions and report the results.

    When you've completed all on-demand scans and other remediation steps, run the following (both commands take a while to complete).

    If there are any integrity issues reported in the results on the screen,

    Launch Command Prompt (Admin)

    Dism /Online /Cleanup-Image /RestoreHealth

    SFC /ScanNow
     
    Slartybart, Jun 5, 2021
    #3
  4. MARINAL_64
    MarinaL_64 Win User

    Defender antivirus could not completely remove a potential threat. Ran Defender offline,...

    Defender wont remove the threats

    I ran Windows Defender full scan which took over 15 hours to completed. It indicates that there are 20 threats which I want to remove. However Windows Defender gets stuck and does not remove any of them. It has been running for over 20 hours and nothing.
    What can I do to remove these threats.

    Thanks
     
    MarinaL_64, Jun 5, 2021
    #4
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Defender antivirus could not completely remove a potential threat. Ran Defender offline,...

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