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How to fix 0xCAA800 in OneNote

Trudie 0 Reputation points
2025-09-30T10:14:38.2866667+00:00

Error code 0xCAA800 shows when I try to sign in on my in app notebook so it will not sync. Works well in browser.

Microsoft 365 and Office | OneNote | For education | Android
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  1. Jayden-P 22,475 Reputation points Microsoft External Staff Moderator
    2025-09-30T10:56:03.2033333+00:00

    Hi @Trudie

    Thank you for posting your question in the Microsoft Q&A forum.

    I found an article might help you.

    Fix issues when you can't sync OneNote - Microsoft Support

    Here are some basic troubleshooting steps you can try:

    Logout and log back in to OneNote to reset your credentials.

    Force Syncing for Android phone: Tap the three-dots menu and choose sync notebook.

    Update OneNote to the latest version.

    Please try and let me know if it works for you. If not, we can figure out another approach.

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