How do I change from robotic to natural voice in Read Aloud?

Natural-sounding Read Aloud voices in Word are provided as online “neural” voices. When these are not available, Word falls back to the older, more robotic local system voices (for example, Microsoft David, Zira, Mark). To get back to the natural voices and switch between them, use these steps and checks:

1. Confirm internet connection and sign-in
   • Make sure the device is connected to the internet.
   • Ensure sign-in with a Microsoft 365 account in Word; Read Aloud’s neural voices require this.
   • If Read Aloud or neural voices are missing, sign out of the account in Word, close Word, reopen it, and sign back in.
2. Start Read Aloud from the Review tab
   • In Word, open any document.
   • Go to Review > Read Aloud.
   • This opens the Read Aloud toolbar.
3. Change the Read Aloud voice
   • On the Read Aloud toolbar, select the Settings (gear) icon.
   • Use the Voice Selection (or voice list) to choose among available voices.
   • Natural-sounding voices will appear here when the online service is working and the account is properly connected.
4. Adjust speech settings in Windows (for system TTS voices)
   • On Windows, open Start > Settings > Time & Language > Speech.
   • Under Voices, choose a different default voice and adjust speed.
   • If needed, install additional speech languages/voices here; Word can use these when the online neural voices are not available.
5. If natural voices suddenly reverted to robotic
   • This can happen after an update or if the online voice service fails.
   • A commonly reported workaround is to reset the Read Aloud configuration in the registry, then restart Word so it reinitializes voice selection. (This is an advanced step and should be done carefully, as it involves editing the registry.)
   • After resetting and restarting Word, start Read Aloud again and re-open the voice list; the natural voices should reappear when the online service is available.
6. Keep Word updated
   • Natural voice improvements are delivered through Office updates. Ensure Microsoft 365 Apps are up to date so the latest Read Aloud enhancements and voice options are available.

Once the online neural voices are active again, they will appear in the Read Aloud voice list, allowing switching from the three legacy robotic voices to the more natural options.

References:

• Listen to your Word documents
• Download languages and voices for Immersive Reader, Read Mode, and Read Aloud
• What’s new in Word 2021 for Mac
• Chapter 7: Customizing Narrator
• Archived Release Notes for Current Channel
• Natural-sounding Read Aloud voice in Microsoft Word changed by itself to robotic default voices - Microsoft Q&A
• Read Aloud internet voices aren't loading - Microsoft Q&A