How to Fix OneNote Sign-In Freeze on Mac Without Losing Data
Question details
The user needs to resolve a freezing issue in OneNote for Mac when attempting to sign in, ensuring that unsynchronized local data is safely preserved.

- Product
- Microsoft OneNote
- Device & OS
- macOS
- Scenario
- Attempting to sign into OneNote for Mac when the application gets stuck on the 'Saved offline (sign-in required)' prompt.
- Observed behavior
- The application freezes continuously during the sign-in process, and standard troubleshooting methods like restarting the Mac or reinstalling the application fail to resolve the issue.
Before proceeding, log into OneNote for the web to confirm that all your important notebooks are fully synchronized. If you have unsynced notes locally, disconnect from the internet to temporarily bypass the freeze and manually copy the content into a separate text document.
Remove Office License Files and Clear Keychain Access
Use Microsoft's official tool and your Mac's Keychain to eliminate corrupted credentials that block the sign-in process.
Conflicting or outdated login credentials saved deep within the macOS system can cause OneNote to hang when it tries to authenticate your account. Clearing these out forces a fresh, clean login.
Download and run the official Microsoft Office license removal tool for Mac to clear existing license files.
Press Command + Space to open Spotlight Search, type 'Keychain Access', and press Enter to launch the utility.
In the search bar of Keychain Access, type 'Microsoft' or 'Office'. Select all related credential entries, right-click, and choose 'Delete'.
Restart your Mac, launch OneNote, and enter your account credentials to sign in normally.

Clear OneNote and Office Group Containers
Delete the specific application container folders to remove corrupted local cache files causing the software freeze.
Try WPS Office for a Stable and Lightweight Experience on Mac
If Microsoft Office applications frequently freeze, crash, or experience syncing issues on your Mac, consider switching to WPS Office. It provides a lightweight, highly compatible alternative for document creation, spreadsheets, and presentations without complex licensing errors.
- 1. Download the Mac installer: Visit the official WPS website and download the free installer designed specifically for macOS.
- 2. Install the application: Open the downloaded package and drag the WPS Office icon to your Applications folder to install it.
- 3. Open and edit Office files: Launch WPS Office and directly open your existing .docx, .xlsx, or .pptx files to seamlessly continue your work.

Frequently Asked Questions
Will deleting the Microsoft license files cause me to lose my saved notes?
No, removing the license files only clears the local authentication data on your Mac. Your actual notebooks remain securely stored in your OneDrive or SharePoint account, provided they were fully synced before the issue started.
Why does OneNote say 'Saved offline (sign-in required)'?
This message indicates that OneNote has lost its connection to Microsoft's servers. This usually happens due to credential conflicts, corrupted cache files, or network changes, which prevents the app from verifying your account and syncing your latest changes.
How can I back up unsynced notes if OneNote is completely frozen?
If the application freezes on startup, try disconnecting your Mac from the internet (turn off Wi-Fi or unplug the ethernet cable) before launching OneNote. This often bypasses the sign-in freeze, allowing you to manually copy your unsynced text into another program like TextEdit for safekeeping.




