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Nick Otmazgin
Nick Otmazgin

Posted on AI-assisted

FluentVoice Pro 1.6.4: online voices back on Microsoft's original server

FluentVoice Pro 1.6.4 is out: the Microsoft online voices are back on their original server.

In October 2026 Microsoft's classic voice server started refusing connections (HTTP 403) for every app built on edge-tts (edge-tts #490). FluentVoice 1.6.3 worked around that by switching to Microsoft's newer server. Upstream edge-tts 7.3.0 / 7.3.1 fixed the outage, so 1.6.4 requires edge-tts 7.3.1 and reads from the classic server again. The 1.6.3 failover stays as a safety net.

Also new: if Microsoft briefly limits requests after many readings (HTTP 429), Test providers now says so in plain words and suggests waiting a minute or using an offline voice.

Earlier write-up for the 1.6.3 health check and failover: https://dev.to/nickotmazgin/fluentvoice-pro-163-the-microsoft-online-voices-work-again-plus-a-health-check-that-says-what-2bfh

Some AI assistance was used while preparing this post.

FluentVoice Pro reading aloud on laptops in a library

FluentVoice Pro in use on a laptop during a flight

FluentVoice Pro on a cruise deck in Alaska

FluentVoice Pro in operations and EMS settings (collage)

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