VAPI•2mo ago

Azure Voice disconnects

This morning my agent has been disconnecting in the middle of the call:
call.in-progress.error-vapifault-azure-voice-failed
I changed voice providers and agent started working again.
CallID: 019a6dfb-e9ac-7661-b4c5-c4e2f9f01d48

Vapi Support BotAPP•11/10/25, 2:03 PM

Thanks for reporting the Azure Voice disconnection issue.
While the documentation does not cover this specific error, please double-check your Azure voice configuration for any discrepancies. Here’s an example configuration snippet for reference:

"voice": {
  "provider": "azure",
  "voiceId": "andrew",
  "cachingEnabled": true,
  "speed": 1.1
}

"voice": {
  "provider": "azure",
  "voiceId": "andrew",
  "cachingEnabled": true,
  "speed": 1.1
}

If the configuration is correct and the issue persists, consider reaching out to support with your CallID and error details for further investigation.

Source:

API reference for calls/create

⤵️ Mention @Vapi Support Bot for follow-ups 🐥

scornful-crimsonOP•11/10/25, 3:59 PM

That is what my config looks like, except no "cachingEnabled": true,

nursing-lime•11/10/25, 5:29 PM

The same here when trying to use Azure voices

ltd-scarlet•11/10/25, 5:59 PM

Message Issue:
Your agent keeps disconnecting in the middle of calls showing the error: vapi:alt-azure-voice-failed-callin-progress.

What’s happening:

The call drops randomly during an ongoing session.

After switching voice providers, the issue stops, so it seems Azure-specific.

What You have checked:

Network connection is stable.

Agent configuration and credentials are correct.

No changes were made before the issue started.

Request:
Please check if there’s a known issue or outage with the Azure voice provider. Also, confirm if any configuration updates or workaround is needed to prevent these disconnections.

VapiAPP•11/12/25, 7:47 PM

Hi cc_0844,

It seems you are facing issues regarding Azure services with applicable VAPI calls or configurations. Based on what I found, call.in-progress.error-vapifault-azure-voice-failedcall.in-progress.error-vapifault-azure-voice-failed might indicate a failure with Azure's voice services. For resolving these issues:

Azure Speech Transcriber Support: Ensure you have correctly specified AzureSpeechTranscriberAzureSpeechTranscriber as an option for your transcribertranscriber to utilize Azure's speech-to-text capabilities. More details can be found in the changelog.
Call Ended Reasons: Confirm the cause of any call disconnects or errors, check the endedReasonendedReason code in your call logs for further insights on failures here.

Please verify these configurations and let me know if you need further assistance.

Azure Voice disconnects

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