How to Fix OneNote Sync Changing Text Size and Producing Garbled Text
Question details
The user needs to fix an issue where synchronizing notes between Mac and Windows computers alters text sizes and causes content to become garbled.

- Product
- Microsoft OneNote
- Device & OS
- Mac and Windows
- Scenario
- Synchronizing notebooks across different operating systems.
- Observed behavior
- After synchronization is complete, the text size changes unpredictably and some characters appear garbled on the receiving device.
Ensure both your Mac and Windows devices have an active internet connection and that the OneNote synchronization process has fully completed before troubleshooting.
Verify Font Availability on the Receiving Device
Check if the fonts used in your notes are installed on both devices, as missing fonts will cause the system to substitute them, altering text size and layout.
When notes are synced across different operating systems, the receiving computer must have the same fonts installed. If a font is missing, OneNote forces a substitution, which can result in garbled text or incorrect text sizing.
Open the notebook on the original device where it was created (Mac or Windows) to confirm that the text displays correctly without any garbled characters.
Highlight the text that appears garbled on the other device, and check the Home tab on the ribbon to note the exact name of the font being used.
On the receiving computer, open your system font settings (Font Book on macOS or Fonts in Windows Settings) and search for the font name you identified.
If the font is unavailable, download the font file and install it on the receiving computer, then restart OneNote to see if the text renders correctly.

Test Synchronization with a New Notebook
Create a completely new notebook to determine if the garbled text is caused by a specific corrupted notebook or a general synchronization error.
Experience Seamless Cross-Platform Compatibility with WPS Office
If formatting and synchronization issues in Microsoft Office products are disrupting your workflow, try WPS Office. It provides a lightweight, highly compatible alternative for document creation across Windows, Mac, Linux, and mobile devices, ensuring your fonts and formatting stay exactly as you intended.
- 1. Download WPS Office: Visit the official WPS website and download the installer for your current operating system.
- 2. Install and Launch: Run the installation file and follow the on-screen instructions, then open WPS Office.
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Frequently Asked Questions
Why do fonts look different when moving from Mac to Windows?
Mac and Windows operating systems come with different pre-installed default fonts. If a specific custom font used on a Mac is unavailable on Windows, the system will automatically substitute it with the closest available font, which often changes the text size and layout.
How can I force OneNote to sync immediately?
You can force a manual sync by right-clicking the notebook name in the left navigation pane and selecting 'Sync This Notebook Now'. Alternatively, you can press Shift+F9 on a Windows keyboard.
Does using standard fonts prevent garbled text in OneNote?
Yes, sticking to universal, cross-platform fonts like Arial, Calibri, or Verdana ensures that your text remains readable and correctly sized, as these fonts are natively supported on both Mac and Windows devices.
What should I do if OneNote sync is completely stuck?
If synchronization hangs, try closing and reopening the specific notebook. If that fails, check your OneDrive storage space to ensure it isn't full, or try signing out of your Microsoft account and signing back in to refresh the connection.




