Systems Engineering is aware of an issue impacting some Microsoft 365 services. Microsoft is investigating and will be providing updates. You can find updates below or check their service health status page.
Microsoft's Final Status: We've monitored the service for an extended period of time and worked with some of the affected users to confirm that impact has been mitigated following our redirection of the affected traffic.
Microsoft confirmed that the following services are affected:
- Exchange Online
- Skype for Business
- Microsoft Teams
- SharePoint Online
- Microsoft 365 admin portal
Users may experience problems when accessing their mailbox via Outlook or delays when sending/receiving mail. Skype for Business, Microsoft Teams, and SharePoint Online may be inaccessible to users. Lastly, tenant admins may be unable to access the Microsoft 365 admin portal.
This issue appears to be isolated primarily to Eastern United States.