Microsoft Outlook issues today: Why you can't log in

Microsoft Outlook hit a widespread outage, causing intermittent sign-in failures and unexpected sign-outs for many Microsoft 365 users.

Microsoft rolled back a recent configuration change and tested fixes as it worked to restore service.

Later updates said most users had recovered, though some iPhone users still needed extra steps to regain access.

The disruption affected business and enterprise email access during the workday, underscoring reliance on Microsoft services.