Kore.ai incident

Microsoft Speech Service Degradation Impacting IVR

Resolved after 11 hours 25 minutes, affecting Microsoft Azure ASR/TTS, on April 23, 2026.

identified Apr 23, 2026, 07:31 PM UTC

An issue with Microsoft ASR confidence scores in the East region has been reported by multiple customers using our BankAI solution over IVR. This has been identified as an issue from Microsoft’s end. During our working session, the Microsoft support team acknowledged the problem and is actively working on a fix, although it has not yet been reflected on their status page. For BankAI customers, as an interim mitigation, we have i implemented workaround by handling the minimum confidence score. Other Kore customers using Microsoft ASR in the US East region and relying on confidence scores may also experience similar issues. A possible workaround can be to reduce the minimum confidence score threshold (e.g., set it to 0.01) to allow calls to proceed and minimize impact.

Started
Apr 23, 2026, 07:31 PM UTC
Resolved
Apr 24, 2026, 06:56 AM UTC
Duration
11h 25m
Detected by Pingoru
Apr 23, 2026, 07:31 PM UTC

Affected components

Microsoft Azure ASR/TTS

Update timeline

  1. identified Apr 23, 2026, 07:31 PM UTC

    An issue with Microsoft ASR confidence scores in the East region has been reported by multiple customers using our BankAI solution over IVR. This has been identified as an issue from Microsoft’s end. During our working session, the Microsoft support team acknowledged the problem and is actively working on a fix, although it has not yet been reflected on their status page. For BankAI customers, as an interim mitigation, we have i implemented workaround by handling the minimum confidence score. Other Kore customers using Microsoft ASR in the US East region and relying on confidence scores may also experience similar issues. A possible workaround can be to reduce the minimum confidence score threshold (e.g., set it to 0.01) to allow calls to proceed and minimize impact.

  2. resolved Apr 24, 2026, 06:56 AM UTC

    This incident has been resolved.

Your product runs on more than Kore.ai

Add the vendors you depend on and get one message when any of them reports trouble. Free for 3 vendors, no card.

Add your stack →