If your Outlook is refusing to launch or crashing at random, you might want to check for this unscheduled update.

Microsoft has released another emergency Windows 11 update after a January patch triggered widespread app crashes, Outlook failures, and cloud sync issues, forcing the company into rare back to back ...

Microsoft issued another out-of-band update to fix a bug that caused Outlook to crash for Windows 11 users. This second ...

The out-of-band patch targets cloud file issues triggered by January’s security update, after Outlook users reported ...

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

Now, Neowin reports that several users are saying the latest Windows 11 update ( KB5074109) has made classic Outlook ...

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

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

Microsoft admits that “Classic Outlook profiles with POP accounts and PSTs hang after Windows updates on January 13, 2026.” If you’re affected, you need to await a fix. “The Windows Team will be ...

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

Microsoft has released emergency Windows 11 / 10 updates again with KB5078127 KB5078132 KB5078129, and KB5078131.

Microsoft has taken the rare step of publicly advising users to uninstall a Windows 11 security update after it triggered ...