XDA Developers on MSN

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

There are workarounds, though.
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

Microsoft says uninstall Windows 11 KB5074109 to fix Outlook POP, PST hang, as 2026’s first update causes havoc

If your Outlook Classic freezes or hangs when you use POP accounts or deal with PST files, you'll need to remove Windows 11 ...
Windows Report

Latest Windows 11 Update Leaves Classic Outlook Unusable for Many

Windows 11 Patch Tuesday updates for 24H2 and 25H2 reportedly break classic Outlook, causing freezes, hangs, and lost email ...

Microsoft shares workaround for Outlook freezes after Windows update

Microsoft shared a temporary workaround for customers experiencing Outlook freezes after installing this month's Windows ...
Windows Latest

Windows 11 KB5074109 issues: black screen, freezes Outlook POP, breaks Azure Virtual Desktop, LocalizedResourceName (desktop.ini)

Windows 11 KB5074109 causes a black screen on some PCs, including those with an Nvidia GPU, and also freezes Outlook if you ...

Windows Update Problems: Outlook Freezes with POP Mail Accounts

Microsoft's January security updates for Windows 11 also appear to be disrupting Outlook. Microsoft is investigating problems ...

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 ...