After Mac software update Microsoft 365 is not activating

Monika 0 Reputation points
2026-08-31T18:05:14.2266667+00:00

I am having trouble activating all Microsoft applications after a software update on Mac. I uninstalled everything, re-installed the newest version, signed in and out and in again and it is still the same. I can view but not work. I saw the note that Microsoft seems to be working on it but need to know how long this will take and what else I can do on my mac??

Microsoft 365 and Office | Install, redeem, activate | For business | iOS
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  1. Stefan Blom 352K Reputation points MVP Volunteer Moderator
    2026-08-31T18:09:28.0733333+00:00

    Which version of macOS do you have? For Microsoft Office to run, you will need macOS 12 or later.

    Regarding Office versions, you will need a license which lets you run Office release 16.83 or later. Office 2019 is an example of a product which will not work anymore, following the certificate updates from Microsoft in July.

    See https://www.brandwares.com/bestpractices/2023/03/most-recent-office-you-can-run-best-practices/ and https://support.microsoft.com/en-us/office/lifecycle/officeinstall/update-m365-office-macos-ios .

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  2. Stefan Blom 352K Reputation points MVP Volunteer Moderator
    2026-08-31T22:51:28.7366667+00:00

    Thanks for the version info. It seems that you have the most recent versions of both macOS and an Office subscription. There have been some reports of a temporary glitch with the activation servers. Maybe that is what you have been affected by.

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