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Windows 11 Defender Virus & Threat Protection missing

Darrell Porter 0 Reputation points
2026-04-20T19:24:22.8866667+00:00

The Windows 11 “Virus & threat protection” is still missing even after a repair install. Multiple Windows 11 Powershell and CMD tests have pointed to the conclusion that there is something active in the environment that is suppressing the Defender UI module. The Defender engine still runs, but in a limited/passive state. How can the ongoing missing Virus & threat protection problem be repaired?

Microsoft Security | Microsoft Defender | Other
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  1. Catherine Kyalo 3,095 Reputation points Microsoft Employee
    2026-05-06T09:02:01.9033333+00:00

    Hi Darrell Porter,

    This may point to Microsoft Defender Antivirus being placed in passive mode or fully disabled. This typically happens when another antivirus product is installed.

    To confirm this run Get-MpComputerStatus Look for AMRunningMode: which should be Normal, if not, this confirms antivirus is inactive.

    Check whether a third-party antivirus product is installed from Windows Security > Security at a glance and look under the Virus & Threat Protection section to see which provider is listed. If a third-party product is listed, it is the active antivirus. To restore defender, uninstall, then restart the device. Defender should return to active mode automatically.

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