Mac OneNote 16.66.1: Sync Error Please refresh this notebook to continue syncing. We couldn’t open this section.
2025-05-19 21:15
ISSUE:
OneNote 16.66.1 doesn't sync anymore in macOS Catalina 10.15, Error Message:Sync Error Please refresh this notebook to continue syncing.
Refresh Now
We couldn’t open this section.

View Sync Errors Windows
In File menu -> View sync errors menu item shows:Sync Errors
Please refresh this notebook to continue syncing. (Error code: 0xE000006C cig68 30115 | B6d6fb8c-19c6-1845-b186-6114d2783728 202505191227)

OneNote cannot list the pages after click a section.
Solution:
- The solution now is to uninstall the current version of OneNote for Mac.
- Then go here All Platforms and Versions OneNote Download to download and install: Mac OneNote 16.77.
- Then log in to your Microsoft account and you can resume normal use.