Unknown Error 0x0 or License not found error in Microsoft 365 or Office running on macOS

Tyler Glenn 0 Reputation points
2026-07-27T22:56:22.1233333+00:00

My iMac specs: macOS Sequoia 15.4.1

Microsoft recognizes this as a current common issue and has provided instructions to fix. However, the instructions to open the Microsoft AutoUpdate (MAU) From Finder > Applications > Microsoft AutoUpdate don't get there. Then: Note If you don't see MAU, check/Library/Application Support/Microsoft/MAU2.0/. However, I can't LIBRARY in my Finder. HELP!

Microsoft 365 and Office | Word | For home | MacOS

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  1. Bob Jones AKA CyberTaz MVP 437.3K Reputation points
    2026-07-27T23:20:03.6033333+00:00

    You first need to update Sequoia. Version 15.7.7 is the present release.

    I'm not sure where you found instructions pointing you the Applications folder to locate MAU it never has been there because it isn't an application. In either Office program use Help> Check for Updates in order to launch the MAU utility.

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