Microsoft confirmed that the KB5074109 January Windows 11 security update causes the classic Outlook desktop client to freeze and hang for users with POP email accounts.

Ensure smooth email delivery by checking Outlook's status, restarting the app, and maintaining stable internet connectivity Make sure Outlook is working and check your internet connection if you're not getting emails. Restart Outlook and see if your ...

If Share Contacts is not working, missing, or grayed out in MS Outlook, ask the owner to give you permission, delete Outlook cache, ask the administrator to remove restrictions.