Troubleshoot OneNote Sync Errors

If you see sync errors, here are some things you can try to resolve the issues:

Step 1: Reset the notebook that can’t sync

  1. Click your notebook to see a list of all the open notebooks.

  2. In the notebooks list, hover over the notebook that shows a sync error, then click Expand > Close.

Manually sync a notebook

  1. Click File > Open Notebook…, and choose the notebook that you just closed.

  2. Try syncing your notebook.

Step 2: Identify and resolve errors in sections that can’t sync

  1. Click the name of the notebook you’re currently working in.

  2. Click Sync error icon to see the sync error, and locate the section that’s having trouble syncing.

Notebook list with sync error

  1. Create a new section in the same notebook.

  2. Copy (don’t move) all of the pages from the old section into the new one you just created.

  3. When all of the pages have been copied to the new section, click File > Sync All Notebooks.

  4. Try syncing your notebook.

Step 3: Update OneNote for Mac

We’re continuously making OneNote better, so it’s a good idea to check if you have the latest version of the app installed on your computer.

  1. On the Finder, click Go > Applications.

  2. Double-click to open App Store.

  3. Click Updates .

  4. If you see OneNote for Mac in the list of updates, please install it and try syncing again.

If you still have trouble syncing, post your question in the Microsoft Community forums. They are a great resource, including Microsoft Support agents who can help investigate your issue further.

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