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.

Sync Error Please refresh this notebook to continue syncing. 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)

Please refresh this notebook to continue syncing. (E000006C cig68 30115

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 (Release at 2022.10.12).
Then log in to your Microsoft account and you can resume normal use.

2025.5.13 release Mac OneNote 16.97.