SharePoint Document Issues

How to Fix Outdated OneNote SharePoint Sync Address After Domain Change

Huma Ashraf Ch Sep 30, 2026 870 views

Question details

Users are encountering a 404 synchronization error in the OneNote desktop application because the software continues attempting to sync using an old SharePoint address after the organization's Microsoft 365 domain has changed.

Fix an Outdated OneNote SharePoint Sync Address After a Domain Change

Product: Microsoft OneNote
Device & OS: not provided
Scenario: Syncing existing notebooks via the desktop app following a Microsoft 365 organizational domain name change.
Observed behavior: The OneNote desktop app fails to sync and displays a 404 error because it retains the former SharePoint synchronization path instead of automatically updating to the new domain.

Before you start

Before closing the affected notebook, manually copy and paste any un-synced notes (pages displaying a sync warning or error icon) into a temporary local document to prevent accidental data loss during the reconnection process.

Solution 1Recommended

Close and Reopen the Notebook from the New SharePoint Location

Refreshing the synchronization path requires manually disconnecting the notebook from the desktop app and launching it fresh from the updated Microsoft 365 domain.

The OneNote desktop application caches the original SharePoint URL for offline access and performance. When a global domain change occurs, this cached path becomes invalid, resulting in the 404 error. Forcing the app to fetch the notebook from the new web location overwrites the outdated sync address.

Close the affected notebook

Open the OneNote desktop application, right-click on the name of the notebook experiencing the 404 sync error in the left navigation pane, and select 'Close This Notebook' from the context menu.

Navigate to the new SharePoint domain

Open your web browser, log in to your Microsoft 365 account, and navigate to the SharePoint site or OneDrive location using the newly assigned organization domain address.

Reopen in the desktop app

Locate your notebook within the web document library and click on it to open it in OneNote for the Web. Once loaded, click the 'Editing' dropdown or the 'Open in Desktop App' button on the top ribbon to launch the notebook locally and establish the new synchronization path.

Close and Reopen the Notebook from the New SharePoint Location

Sync Path Restored: Once the notebook opens locally, OneNote will automatically begin downloading the latest changes from the new domain. Depending on the size of the notebook, this initial sync may take a few minutes.

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Frequently Asked Questions

Why didn't OneNote update my SharePoint address automatically after the domain change?

OneNote locally caches the exact URL path of the notebook to allow for seamless offline editing. It does not automatically poll the organization's DNS for structural domain changes, so the old cached URL triggers a 404 error when it attempts to contact the retired SharePoint address.

Will closing my notebook in the desktop app delete my notes?

Closing the notebook removes it from your local desktop view but does not delete it from the SharePoint server. However, any recent edits that failed to sync (due to the 404 error) will be lost if you close the notebook before manually backing up those specific un-synced pages.

How can I locate my new SharePoint domain address if I don't know it?

Log in to the main Microsoft 365 portal (office.com) through your web browser, open the 'App Launcher' (the nine-dot grid in the top left corner), and select SharePoint. Search for your team or organization site; the URL displayed in your browser's address bar is your new domain address.

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