Apps and services under Microsoft 365 experienced worldwide service degradation, preventing users from accessing their platform, the company said on Friday, Nov. 13.
Microsoft acknowledged the issue in a post on X at 1:54 a.m. Philippine time Friday, the company said it was investigating reports of its users having trouble connecting with their Outlook Exchange Online mailboxes.
“Users may be unable to connect to multiple Microsoft 365 services,” Microsoft said on its service health page.
It listed Exchange Online, Microsoft Teams, SharePoint Online, Microsoft 365 Copilot, Microsoft Defender XDR, Planner, To Do, Intune and Microsoft Defender for Office 365 as potentially affected.
The advisory also listed the following Microsoft 365 services:
- Microsoft Purview
- Power BI
- Microsoft 365 Apps admin center
- Universal Print
- Windows 365
According to Downdetector reports in the Philippines, 37% of Outlook reports concerned the app, 36% the website and 14% trouble receiving messages.
For Teams, 68% concerned the app, 19% the website and 10% login problems.
In the United States, Downdetector logged around 97,000 Outlook reports at 3:07 a.m. Philippine time Friday, Reuters reported.
The tracker also recorded more than 38,000 reports for Microsoft 365 and about 4,500 for Teams.
“The servers we returned to service can become unresponsive again once they receive traffic,” Microsoft said in an 8:06 a.m. Philippine time update on X.
The tech giant said it was reviewing diagnostic data, limiting traffic and rebuilding its servers using a previous software configuration.
Microsoft directed users to incidents EX1550543 and MO1550821 in the Microsoft 365 admin center and to its public service status page.
