Trying to install Office Home 2024 (single user) but I get "update error" after "installation successful" screen.

Steve Ravenhill 25 Reputation points
2026-01-07T17:12:55.2633333+00:00

After the "installation successful" message, auto update checks for new updates and at that point I get "update error" and "some apps have encountered errors" The following apps have "upgrade required" : Excel 16.78, Outlook 16.78, Powerpoint 16.78, Word 16.78 . Error reporting 2.2 and remote Desktop Connection 2.1 have a "check error" message beside them.

Microsoft 365 and Office | Other
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Answer accepted by question author
Arlene D 36,300 Reputation points Independent Advisor
2026-01-07T17:45:30.24+00:00

Hello. This happens when Office installs correctly but signs in with the wrong Microsoft account or detects an older Microsoft 365 build. Office Home 2024 requires sign-in with the same Microsoft account used for purchase.

Open any Office app, select File, then Account, and confirm the email matches your purchase. Version 16.78 is a Microsoft 365 build, so the upgrade required message points to a license mismatch, not a failed install.

I also suggest removing older Office versions using the Microsoft Support and Recovery Assistant, then reinstalling Office Home 2024 from your Microsoft account page to apply the correct license and updates.

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