Using classic Outlook for Windows in business environments
For me, the notes were archived, and there was no way to expose the archive (notes) folder without getting in admin role for compliance-research/purview (according to outsourced IT). This on start trick worked perfectly, directly from the application, with only the mailbox credentials. When the app is forced to show the notes folder on start, it triggers a (different) sync, and then the app realizes that there is a notes folder in the archive. This is not a feature. Must be a bug.
Thanks a million Rick