Microsoft 365 Alert – Service Degradation – Microsoft Teams – Some users may be unable to join some Teams Walkie Talkie channels – RESOLVED

Uncategorised Sourav Nandi

12/06/2025 11:20:00 AM

NHSmail Reference: INC46553188

Microsoft Reference: TM1092435

Issue Status: RESOLVED

Issue Description: Some users may be unable to join some Teams Walkie Talkie channels.

Final Update: 16/06/2025 09:00:00 AM – Microsoft have confirmed using our internal service telemetry that their fix remediated impact.

Scope of impact: This issue may potentially impact some users joining some Teams Walkie Talkie channels.

Root cause: Failures happening related to membership validations are causing issues with some users joining some Teams Walkie Talkie channels.

Next steps: Microsoft are reviewing the membership validation errors to identify the origin of this issue, allowing them to create a strategy that prevents additional errors in the future.