Nationwide Microsoft Outage: Exchange Online and Outlook Down & Not Working for More Than 12 Hours Now, With No Confirmed Fix

Microsoft’s Exchange Online and Outlook outage has now lasted more than 12 hours, impacting email access worldwide. Businesses, government agencies, flights, and consumers are still dealing with connectivity problems as engineers struggle to restore affected infrastructure.

Microsoft’s recovery attempts aren’t going as planned

The issue began yesterday and quickly spread beyond email. Microsoft 365 services, including Teams, SharePoint, and Copilot, have also experienced problems. Downdetector recorded more than 130,000 Outlook outage reports at the peak yesterday. The company has apologized for the outage as it confirmed the restoration work is ongoing behind the scenes.

Microsoft identified an overwhelmed process responsible for establishing secure connections on affected servers. Those servers stopped processing requests, while some became unresponsive again after engineers returned them to service.

The company has tried server restarts, traffic rerouting, temporary traffic restrictions, and configuration changes. However, Microsoft later confirmed that some recovery changes were not producing the expected results. Engineers are now exploring alternative ways to restore capacity and stabilize the infrastructure.

Microsoft says there is no indication the outage resulted from malicious or cyber activity. The issue has already affected businesses and government operations across multiple countries. An outage report should make for an interesting read once Microsoft finally gets everything back online.

For now, there’s still no confirmed timeline for full restoration. If Outlook, Exchange Online, Teams, Sharepoint, Copilot, Defender, Intune, and more are not working for you, it’s most likeky due to the ongoing outage. We know it’s hard to stay patient, but there isn’t much you can do rather than wait fir the outage to be resolved.

We’ll put out a new article if we hear about service restiration. Until then, keep checking Windows Report or Microsoft 365 Status account on X for further updates.

This is a developing story….