Microsoft issued another out-of-band update to fix a bug that caused Outlook to crash for Windows 11 users. This second emergency patch addresses issues seen with Outlook and files stored in the cloud following Microsoft's January 2026 Windows security update.

At last there’s a fix. Millions of Outlook users been plagued with failed restarts and missing emails since Microsoft released its mandatory January security updates. Now the company has confirmed a new emergency update to put things right.

Microsoft releases an urgent Windows 11 update to fix Outlook crashes caused by the January 2026 security patch and cloud file conflicts.

Microsoft 365 is down on Thursday and the company issued a statement as thousands of users faced problems with services.

Down to 364.5 already: Redmond's crappy 2026 continues Microsoft 365 suffered a widespread outage last night affecting multiple services including Outlook – adding to the megacorp's troubled start to 2026.