Onenote Container

What is Onenote Container?

This folder is the sandbox container for Microsoft OneNote on macOS. It holds local app data that OneNote uses while you create, organize, edit, and sync notebooks on your Mac. In normal use, container data can include offline note content, account-related state, temporary working files, and other app-specific items that support day-to-day note taking. OneNote is a digital notebook app used for class notes, work notes, project planning, research, and shared notebooks across devices. On Mac, OneNote works with Microsoft accounts and OneDrive so notebooks can stay available and update across supported devices. Users usually encounter this folder only when reviewing storage, troubleshooting sync issues, or removing OneNote and its remaining local data.

Safety overview

Status: Use with caution

This container is consistent with Microsoft OneNote for Mac and can hold locally stored notebook data and sync-related information. Deleting it can remove offline copies, sign-in state, and other local app data, and OneNote may need to download notebooks again or be set up again afterward. If you still use OneNote, keep this folder. If you plan to remove it, make sure your important notebooks are fully synced to OneDrive or exported first.

Recommendation: Keep this folder if you use OneNote on this Mac or want to preserve its local data. Remove it after uninstalling or abandoning OneNote if you want to reclaim space, but expect local settings and offline notebook data to be cleared. If you are troubleshooting OneNote, remove it only after confirming your notebooks are safely available in your Microsoft account.

File path

• ~/Library/Containers/com.microsoft.onenote.mac

Related apps

• Microsoft OneNote

Related can I delete pages

• ~/Library/Group Containers/UBF8T346G9.Office
• ~/Library/Preferences/com.microsoft.onenote.mac.plist

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