Outage in Nuance Dragon Medical

Error Code: SerializationFailure Details: Unexpected token

Resolved Minor

July 14, 2026 - Started 11 days ago - Lasted about 2 hours
Official incident page

Incident Report

Summary AI Generated

DAX/Dragon Copilot failed to launch in Epic Haiku for ambient users on Epic Nebula, displaying a SerializationFailure error when attempting to communicate with the server. The incident lasted approximately 1.6 hours before Epic identified and remediated the root cause on their end. The issue was fully resolved and confirmed stable by 1:25 PM ET on July 14, 2026.

Microsoft is currently investigating reports of this error.

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Latest Updates ( sorted recent to last )

RESOLVED 10 days ago - at 07/14/2026 05:25PM

This incident has been resolved.

MONITORING 10 days ago - at 07/14/2026 04:57PM

An issue affecting Dragon and DAX Copilot for EPIC ambient users on Epic Nebula is resolved.

DAX/Dragon Copilot launch in Epic Haiku was failing with the following message:

An error was encountered while communicating with the server. Seek assistance from an administrator if the problem persists. Code: SerializationFailure Details: Unexpected token.

Impact is specifically attributed to: Ambient users on Epic Nebulas.

Epic has identified and remediated the issue at their end as of 11:36am ET and are actively monitoring.

Thank you for your patience and continued partnership.

INVESTIGATING 11 days ago - at 07/14/2026 03:50PM

Microsoft is currently investigating reports of this error.

Latest Nuance Dragon Medical outages

Error Code: SerializationFailure Details: Unexpected token - 10 days ago

Possible DAX/Dragon Copilot Impact - 23 days ago

Possible DAX/Dragon Copilot Impact - about 2 months ago

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