The Outlook issue turned up in the Release Health Dashboard for Windows 11 24H2 and is related to using Google Workspace Sync, a tool that allows a user to manage their Google Workspace data ...

Also, only client versions of Windows 11 version 24H2 are affected, and Outlook should work without issues with Google Workspace Sync on previous releases.

According to Microsoft, users who have updated to Windows 11 24H2 may run into issues when opening Outlook if they have Google Workspace Sync installed on their system.

Microsoft now blocks the Windows 11 24H2 update on computers with outdated Google Workspace Sync installs because they're causing Outlook launch issues.