Thousands of Microsoft 365 users were reporting outages on Jan. 22. Here's the latest.

Microsoft programs appear to be suffering an outage.

Microsoft 365 services, including Outlook, Defender, Purview, and Teams, were down on Thursday

Microsoft confirms major outage disrupting Outlook, Teams and Microsoft 365 for tens of thousands of users nationwide.

The dilemma for millions of Windows users now is that Microsoft also warns that “while you might choose ultimately to uninstall a security update, you should know the risks associated with the uninstallation.” These include vulnerability to attacks, compromised personal information and potential data loss, Microsoft says.

Microsoft has issued guidance to uninstall KB5074109 security update or switch to webmail after the patch caused Outlook Classic to freeze on Windows 11 systems.

Microsoft’s January 2026 Patch Tuesday fixes 112 CVEs, including an exploited Windows DWM zero-day, plus critical flaws across SharePoint, Office, and Windows services.

January has become a nightmare for millions of Windows users, as Microsoft’s latest January update creates a surprising raft of issues. We have seen multiple emergency updates. But serious problems remain. And there’s no firm timeline on fixes.