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djolenole's avatar
djolenole
Brass Contributor
Sep 10, 2025
Solved

Can't update Defender app on macOS

Hello, We started getting this situation where Defender for macOS can't be updated: Microsoft Defender 101.25072 Current Version: 101.25062 Installed: 2025-08-05 Update error: The update could not ...
  • djolenole's avatar
    djolenole
    Sep 12, 2025

    Microsoft support: 

    1. One option is to temporarily switch Tamper Protection to Audit Mode, which will allow the updates to be installed.
    2. Alternatively, you can use a Tamper Protection exclusion in combination with the upgrade_helper method. This approach is reliable and does not require changing Tamper Protection to Audit Mode.

    You’ll find the steps to initiate the upgrade_helper deployment in the document linked below.

    https://github.com/microsoft/mdatp-xplat/tree/master/macos/upgrade_from_2506_helper

jlesk's avatar
jlesk
Copper Contributor
Sep 12, 2025

Hi all,

It's included in known issues and MS has supplied a workaround:

https://github.com/microsoft/mdatp-xplat/blob/master/macos/upgrade_from_2506_helper

Best regards,
Jesper

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