XDA Developers on MSN

Windows 11's January update is causing chaos with Outlook, and there's no fix yet

There are workarounds, though.

Microsoft: Windows 11 update causes Outlook freezes for POP users

Microsoft confirmed that the KB5074109 January Windows 11 security update causes the classic Outlook desktop client to freeze ...
Windows Report

Windows 11 KB5074109 Breaks Outlook for POP Accounts, Microsoft Confirms Issue

Windows 11 KB5074109 causes Outlook freezing for POP accounts. Microsoft confirms the issue and investigates a permanent fix.
Windows Latest

Windows 11 KB5078127 emergency update (25H2) fixes Outlook POP, PST crashes, unresponsive ...

Windows 11 KB5078127 is an 'out-of-band' patch to fix an issue that broke Outlook Classic (POP, PST) after January 2026 Patch ...
Windows Latest

Microsoft confirms Windows 11 January 2026 Update issues, releases fix for at least two bugs

Microsoft has confirmed that the Windows 11 January 2026 Update is causing at least three major issues, rolling out fixes for ...