Summary: Microsoft has resolved DNS authentication issues related to Entra ID’s Seamless SSO and Microsoft Entra Connect Sync that occurred due to a recent DNS change. The incident, which affected Azure services between February 25, 2025, lasted for approximately 77 minutes and has since been corrected. Customers should no longer experience DNS resolution failures as a result of this issue.
Affected: Microsoft Azure Services (including Entra ID)
Keypoints :
- Authentication failures occurred due to a DNS change that removed a necessary domain.
- The issue was resolved after reverting the DNS change, restoring normal function.
- This incident is part of a series of recent DNS-related outages affecting Microsoft services.