Users may be unable to make or receive calls using SIP devices.
- Status
- Eingeschränkt
- Funktion
- Calling
- Region
- Nicht angegeben (alle Regionen)
- Beginn
- 21.10.2026, 22:15 Uhr
- Dauer
- 12 Std. 37 Min.
- Letztes Update
- 22.10.2026, 09:50 Uhr
- Nächstes Update
- 22.10.2026, 14:00 Uhr
Aktueller Stand
Our fix is progressing through validation, alongside additional measures to support a safe and stable recovery. Once validation is complete, we'll deploy the fix to the affected infrastructure to begin restoring the affected functionality.
Mehr Informationen
Users may be unable to sign in to their SIP devices or encounter "Service Unavailable" errors.
Once a SIP device attempts to perform its next synchronization, the device will disconnect. Users will be unable to log back into those devices and therefore can't make or receive calls using those SIP devices.
Calling functionality using the Microsoft Teams web and desktop clients, or Teams Phone Devices are not impacted.
Betroffen
Any user attempting to make or receive calls using SIP devices is impacted by this event.
Verlauf
Alle Updates von Microsoft zu dieser Meldung, das neuste zuoberst.
- 22.10.2026, 09:50 Uhr
Our fix is progressing through validation, alongside additional measures to support a safe and stable recovery. Once validation is complete, we'll deploy the fix to the affected infrastructure to begin restoring the affected functionality.
- 22.10.2026, 04:58 Uhr
We're continuing to validate our fix and the recovery of SIP devices within our internal environment. We're also validating additional protective measures before restoring the affected functionality. Once we've confirmed these changes are operating as expected, we'll begin our restoration actions and monitor affected SIP devices as they recover.
- 22.10.2026, 00:52 Uhr
We’re validating a fix within our internal environments and monitoring how SIP devices recover after the fix is applied. This validation is also helping us determine how long affected devices may take to return to normal functionality once the fix is applied. Once validation is complete, we’ll use the results to guide our remediation and restoration actions.
- 21.10.2026, 22:20 Uhr
We’ve identified the underlying root cause and we are working on developing a fix.
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