A family of Microsoft products that enable users to capture, organize, and reuse notes electronically.
Hello! bamxx. Thanks for the details.
This exact error began showing up for many users on 09/29/2025, which strongly suggests a temporary backend issue with the Immersive Reader API.
Here's what to do:
- Check the Microsoft 365 Service Health dashboard (if you’re a tenant admin) for incidents related to OneNote or Immersive Reader / Cognitive Services.
- If you see an entry (often labeled something like "Users may be unable to launch Immersive Reader in OneNote"), you likely just need to wait until Microsoft resolves it.
See if this helps. If you need further assistance, just let me know.
Best regards,
Kimberly