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Ambrosenb's avatar
Ambrosenb
Iron Contributor
May 11, 2026

Window defender not working

My window defender not working can anyone help me please ?, I just reinstall window 11 at pc store and its not working so i think its not malware problem. 😭

4 Replies

  • LukeBrown's avatar
    LukeBrown
    Iron Contributor

    In Settings > Privacy & Security > Windows Security, click Virus & threat protection > Manage settings, turn off Tamper Protection, and then restart your computer.

  • Su-Jace's avatar
    Su-Jace
    Copper Contributor

    Basically, when you uninstall a third-party antivirus, Windows Defender is supposed to automatically turn back on. However, these antivirus programs often leave behind a setting in your system that tells Windows "someone else is in charge of security." That leftover setting blocks Defender from starting up, giving you that "IT administrator has limited access" error on your own personal computer.

  • Silasoer's avatar
    Silasoer
    Copper Contributor

    Open Settings: Press Windows + I.

    Navigate to Privacy & security > Windows Security.

    Click on Virus & threat protection.

    Check if Windows Defender Antivirus is turned on.