Microsoft Office 365 cannot update from 16.99 to 16.100 (macOS 15.6.1)

[MacMorrison]

I installed Office 365 on macOS Sequoia 15.6 and it cannot update its Office apps (Excel, Outlook, PowerPoint, Word) using Microsoft AutoUpdate 4.79 - the app updates take forever to download and fail to install. I tried several times with no change in results (each app simply shows "Update error..." with no explanation).

I'm going to try downloading the Microsoft office apps installer again to see if it has the new versions of the apps...

I uninstalled the apps and re-downloaded the Office 365 package (2.7 GB) and it still had updates(!) Everything updated from version 16.100 to version 16.100.1 (25081721) properly this time.

Make sure to turn off Copilot in the settings if you don't want it.

 

[BigBlur]

I'm going to try downloading the Microsoft office apps installer again to see if it has the new versions of the apps.

If that doesn't work, you can uninstall the apps and get them through the Mac App Store. Then you don't have to deal with Microsoft AutoUpdate, which is known to be annoying and problematic at times. The apps will get updated through the App Store instead.

 

[MacMorrison]

Good idea.

I took a look and the App Store versions are a good idea if you don't want the extra apps Microsoft puts into the package - specifically: Microsoft Defender, OneNote, OneDrive, Outlook, and Teams.

I might test the App Store versions of the Office apps on my next install - I remember finding a support thread acknowledging the update errors are a known bug, but the Library folders they suggested deleting did not exist on my system.