Microsoft’s efforts to fix what is now a multi-day outage affecting customers’ access to Outlook email and other Microsoft 365 services are entering day two.
The company made significant progress in addressing the problem on Monday, after an issue impacting its Exchange Online service led to email delays and failures, authentication issues, and other problems for some Outlook users.
But as of Tuesday, the issues still are not fully resolved. Instead, Microsoft’s latest update shared on X says its “mitigation actions are continuing to progress,” which isn’t exactly the same as saying “all is well.”
Our mitigation actions are continuing to progress within the remaining affected infrastructure. Indications from telemetry remain positive, and we've confirmed service availability is improving. We're entering a period of extended monitoring to ensure a full resolution is…— Microsoft 365 Status (@MSFT365Status) September 1, 2026
While Outlook received most of the attention, Microsoft’s status page for Microsoft 365 (Business or Enterprise) indicates that other services were ultimately affected as well, including SharePoint, Copilot, Teams, Purview, Defender XDR, the Microsoft 365 Admin Center, and Universal Print.
