Office
Clear Microsoft OneNote Cache on Mac
Clearing the cache empties the local sync copy the Mac keeps of your OneNote notebooks, which frees space and often fixes sync problems. Your notebooks stay in OneDrive or SharePoint, so they are not lost once their changes have uploaded.
Clear the Microsoft OneNote cache without guessing
Microsoft OneNote data usually takes 500 MB – 10 GB on a Mac. The free scan shows the exact size on your Mac before you change anything.
Free scan · No account · Nothing is deleted without your OK · Moves to the Trash first · macOS 14+
OptiClear is a Mac app. Copy this page's link and open it on your Mac.
Email me the link- Application
- Microsoft OneNote
- Typical data size
- 500 MB – 10 GB
- Category
- Office
- File Location
~/Library/Containers/com.microsoft.onenote.mac
Microsoft OneNote cache folders you can clear
Microsoft OneNote has no separate cache folder. Its folders hold settings and your own data, so there is nothing to clear safely by hand.
What the Microsoft OneNote cache holds
Specific to Microsoft OneNote
The cache is a sandboxed folder with a local copy of your cloud notebooks, plus settings and edits that have not synced yet. Clearing it helps when notebooks show sync errors, sections load slowly, or the folder has grown to several gigabytes; this app's data typically runs from 500 MB – 10 GB. Notebooks are cloud-only on a Mac, so the cache is a sync copy, not the only home for your pages. Unsynced edits exist only there, so let everything upload before you clear it.
What happens after you clear the Microsoft OneNote cache
Move the app's container folder, ~/Library/Containers/com.microsoft.onenote.mac, to the Trash, which keeps it restorable until you empty the Trash. The next time you open the app, it rebuilds the cache from your notebooks in OneDrive or SharePoint, so the first start is slower. Your notebooks and sign-in data stay in place, so you should not normally need to sign in again. Shared Microsoft components keep working for your other apps.
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- Account and sync
- OneNote notebooks are stored in OneDrive or SharePoint under your Microsoft account; the Mac keeps a local cache of them.
Try it without risk
- Download and scan for freeSee every Microsoft OneNote file and its size. No account needed.
- Clean free for 7 daysStart the 7-day free trial of the yearly plan inside the app.
- Keep it or cancelCancel in your App Store settings at least 24 hours before the trial ends and you won't be charged.
After the free trial, Pro costs $39.99 per year in your country's App Store; cancel any time.