Outlook 365 for Windows can crash when sending email from a Outlook.com is more than usually embarrassing for Microsoft.
The bug is only in the Current Channel (Preview) version 17029.20028 which is the version to everyone on that pre-release option. Other releases like Beta channel and the public release are NOT affected.
According to Microsoft, “The issue is fixed in future builds 17029.20052+. However, this build has not been released yet,” but that’s not true. It seem the support page hasn’t been updated.
We suspect that page is out-of-date because there’s been an update to Current Channel (Preview) to 16.0.17029.20068 which is the new version unleashed on 29 November 2023.
All you need to do is update Microsoft 365 (File | Account | Update Options | Update Now to make sure you’re off the buggy build.
If that doesn’t work the recommended workaround is to force Microsoft 365 to rollback to an earlier version of the software.
Open a Command Prompt with administrator access.
Then run these commands:
cd %programfiles%\Common Files\Microsoft Shared\ClickToRun
officec2rclient.exe /update user updatetoversion=16.0.16924.20124
The version number 16.0.16924.20124 is for the 31 October 2023 release and that’s the version recommended on Microsoft’s support page.
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