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.
Note
- 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.
Alex Lim
Alex Lim is a certified IT Technical Support Architect with over 15 years of experience in designing, implementing, and troubleshooting complex IT systems and networks. He has worked for leading IT companies, such as Microsoft, IBM, and Cisco, providing technical support and solutions to clients across various industries and sectors. Alex has a bachelor’s degree in computer science from the National University of Singapore and a master’s degree in information security from the Massachusetts Institute of Technology. He is also the author of several best-selling books on IT technical support, such as The IT Technical Support Handbook and Troubleshooting IT Systems and Networks. Alex lives in Bandar, Johore, Malaysia with his wife and two chilrdren. You can reach him at [email protected] or follow him on Website | Twitter | Facebook
