Outage in Microsoft 365
Some users may be unable to access the Microsoft Teams Session Initiation Protocol (SIP) gateway
Resolved Minor
July 27, 2023 - Started over 2 years ago
- Lasted about 5 hours
Incident Report
Users may be unable to access the Microsoft Teams SIP gateway.
Components affected
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Latest Updates ( sorted recent to last )
over 2 years ago - at 07/27/2023 11:25AM
Title: Some users may be unable to access the Microsoft Teams Session Initiation Protocol (SIP) gateway
User impact: Users may be unable to access the Microsoft Teams SIP gateway.
Current status: We've identified that a recent standard service update has inadvertently resulted in Session Border Controllers (SBCs) to become unresponsive, resulting in user devices being unable to access the SIP gateway. We've restored the affected SBCs and monitoring telemetry is showing signs of improvement. However, we've further identified the SBCs are encountering some unexpected database 403 errors which may be contributing to impact. We're reviewing database and SBC logs to understand the source of the 403 errors, in order to develop a remediation plan.
Scope of impact: Impact is specific to some users hosted through the affected infrastructure in Europe, Middle East, Africa and North America.
Start time: Thursday, July 27, 2023, at 7:45 AM UTC
Root cause: A recent standard service update has inadvertently resulted in Session Border Controllers (SBCs) to become unresponsive, resulting in user devices being unable to access the SIP gateway.
Next update by: Thursday, July 27, 2023, at 1:30 PM UTC
over 2 years ago - at 07/27/2023 10:27AM
Title: Some users may be unable to access the Microsoft Teams Session Initiation Protocol (SIP) gateway
User impact: Users may be unable to access the Microsoft Teams SIP gateway.
Current status: We're reviewing service monitoring telemetry to isolate the root cause and develop a remediation plan.
Scope of impact: Impact is specific to some users hosted through the affected infrastructure in Europe, Middle East, Africa and North America.
Next update by: Thursday, July 27, 2023, at 12:30 PM UTC
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