December 01, 7:39pm

Title: Admins may be unable to submit manual requests to the Telephone Number Services (TNS) Service Desk
User Impact: Admins may have been unable to submit manual requests to the TNS Service Desk in the Microsoft Teams admin center.
More info: - While we were focused on remediation, admins could go to the "Phone Numbers" page in the Microsoft Teams admin center and then select "Get phone number support".
- Manual actions outside of the United States and Canada included submitting port and transfer requests for Public Switched Telephone Network (PSTN) phone numbers.
- Manual actions within the United States and Canada included contacting the TNS Service Desk when having trouble purchasing net new phone numbers.
Final status: We've determined that an upstream telemetry update inadvertently resulted in impact to Microsoft Teams due to an unforeseen incompatibility. We've reverted the update and monitored the environment to confirm service is restored.
Scope of impact: This issue affected any admins attempting to submit manual requests to the TNS Service Desk in the Microsoft Teams admin center.
Start time: Wednesday, December 1, 2021, at 7:05 PM UTC
End time: Thursday, December 2, 2021, at 1:39 AM UTC
Root cause: An upstream telemetry update inadvertently resulted in the impact to Microsoft Teams due to an unforeseen incompatibility.
Next steps: - To help prevent similar impact in the future, we're further reviewing how we can improve our validation procedures to catch such compatibility issues before deployment.
This is the final update for the event.

December 01, 7:39pm

Resolved