Jan 28 2022 02:07 AM - edited Jan 28 2022 02:29 AM
The last days we have encountered a situation where the upgrade to MacOS Monterey 12.1 or 12.2 fails.
After several reboots the machine returns to the state before the upgrade started, with the addition of several applications crashing upon startup and needing reinstalls of these. This has happened to several machines, both Intel and ARM models when trying to upgrade from various MacOS versions such as 12.0.1 and 11.6.x.
Several repeated attempts give the same result:
It occurred that we might have a compatibility issue with Defender ATP (101.56.35) - and after removing this application completely and retrying the OS upgrade, this was completed without any issues.
Defender ATP was then reinstalled and now works without issues. The same goes for other applications that were "corrupted" during the first tries. Among them are OneDrive and Teams. After a "delete and reinstall" they all now work fine.
A less "Brutal" approach is also tried out (edit: which did not help) disabling various Defender modules, but this is rather time consuming since we do not know the result before the whole upgrade process is "complete".
Anyone else seeing a similar pattern?
Feb 01 2022 11:25 AM
Feb 01 2022 01:48 PM
Hi Eric,
Thanks for reaching out about the issue. We are investigating the upgrade issues to identify root causes and plan for fixes in coming product releases.
Please contact Microsoft Defender for Endpoint support to open a service request by following the process documented here.
Feb 01 2022 02:30 PM
Feb 01 2022 08:53 PM
Feb 01 2022 08:54 PM
Feb 01 2022 09:01 PM
Feb 01 2022 11:02 PM
Feb 01 2022 11:29 PM
Feb 04 2022 11:13 AM
Feb 10 2022 10:28 AM
Feb 10 2022 07:58 PM
Feb 11 2022 07:05 PM
Feb 11 2022 07:24 PM
Feb 16 2022 02:14 AM
Feb 16 2022 09:54 PM
Feb 21 2022 07:18 AM
Mar 02 2022 07:43 AM
We seem to have more Hits than Misses.
222 Monterey Total .
123 Monterey on 12.2
58 Monterey on 12.1
41 Monterey on 12.0
No reports of Upgrade issues from 12. to 12.2 so far.
Mar 03 2022 09:57 AM
Mar 15 2022 11:11 AM