Microsoft says that network configuration issues were responsible for an outage on Wednesday, January 25, that affected multiple Microsoft 365 services, including Microsoft Teams, Exchange Online, Outlook, SharePoint Online, OneDrive for Business, Microsoft Graph, PowerBi, M365 Admin Portal, Microsoft Intune, Microsoft Defender for Cloud Apps, and Microsoft Defender for Identity. Microsoft said the issues were resolved after they rolled back a network change; affected services now appear to be available.
- Apparently my choice to take the 25th off was a good idea. The core outage ran from 7-9AM UTC and was due to a network routing change, which Microsoft rolled back. About the only region not impacted was China. Double check your Azure-hosted services to make sure things are working properly. You may need to restart some services. For example, Facebook had to turn off and back on their database verification service to recover. If you still have folks balking at a back-out plan for change requests, here’s an example they should relate to.