Is Microsoft Outlook down right now?

Detected — medium severity

Current official status reports from Microsoft indicate that while Business and Enterprise services are operational, there is a reported service degradation affecting Microsoft consumer products [Microsoft 365 Service Health Status](https://portal.office.com/servicestatus). For Business and Enterprise users, all products including Exchange Online and Outlook are currently listed as operational [Microsoft 365 Service Health Status](https://status.cloud.microsoft/m365). Previous major incidents, such as the Exchange Online connectivity issues reported in March 2026, have been officially mitigated [Microsoft Exchange Online outage blocks access to mailboxes](https://www.bleepingcomputer.com/news/microsoft/microsoft-exchange-online-outage-blocks-access-to-mailboxes).

Detected — medium severity

As of August 13, 2026, Microsoft's official service health portal reports a service degradation specifically affecting Microsoft 365 consumer products, which includes Outlook.com. While business and enterprise services like Exchange Online are currently listed as operational on public dashboards, some reports suggest potential performance issues or slowdowns affecting Teams, Outlook, and SharePoint. Third-party monitoring tools such as Downdetector and IsDown show no widespread disruptions, indicating the issue may be localized or limited to specific account types.

Detected — medium severity

As of May 5, 2026, Microsoft 365 and Outlook are experiencing partial disruptions. While a major configuration-related outage from late April has been officially mitigated, a new surge in user reports occurred today, particularly around 6:40 PM BST. Many users continue to experience residual authentication loops, 'too many requests' errors, and synchronization issues. Microsoft has previously advised affected iOS users to re-authenticate manually by re-entering passwords or re-adding accounts to resolve persistent connection failures.

Detected — medium severity

As of May 5, 2026, Microsoft 365 and Outlook are experiencing partial service degradation. While official status pages like the Microsoft 365 Admin Center may show services as broadly operational, significant user reports indicate ongoing intermittent sign-in failures and synchronization issues, particularly affecting the Outlook mobile app on iOS. This appears to be residual fallout from a major configuration change incident that occurred on April 27-28, 2026. Furthermore, a recent high-severity false positive in Microsoft Defender Antivirus (detected as Trojan:Win32/Cerdigent.A!dha on May 3) mistakenly flagged DigiCert root certificates, which may still be causing SSL/TLS connection issues or browser warnings for a subset of users who have not yet updated to security intelligence version 1.449.430.0 or later.

Detected — medium severity

As of May 5, 2026, Microsoft 365 services, including Outlook and Exchange Online, are broadly operational but currently affected by an active service advisory (EX1254044). This specific issue causes classic Outlook to crash or fail to launch when the Teams Meeting Add-in is enabled. Additionally, while recent widespread authentication glitches affecting Outlook.com and Hotmail (from late April) have been largely mitigated, some users on mobile platforms (especially iOS) may still experience residual login issues or sync delays requiring a manual password re-entry. Reports of intermittent connectivity were also noted on May 4, suggesting some environment stabilization is ongoing.