Using Classic Outlook on Windows for personal email, calendar, and contact management
Hi,
If you installed the January update and are using an Outlook POP account, this is a known issue.
Many users have reported the same issue where Outlook POP account profiles hang or freeze after installing the Windows 11 update KB5074109. Microsoft is already aware of this issue and is currently investigating the problem.
For an update on the status and some workarounds, please see the article below:
In that article, they also shared a thread from Microsoft Q&A related to the same issue. Some users mentioned that uninstalling the latest update resolved the problem for them.