Somehow my Microsoft OneNote managed to get it's wires twisted somewhere along the line, and though I already had automatic sync chosen in the settings, it would keep showing that small toolbar near the top telling me to sign in / click it to sync the notebook.

This gets pretty annoying after a short time, having to keep clicking it.

Here's a quick & simple fix, just follow these steps

• Close OneNote
• Open up the folder at: C:\Users\<user>\AppData\Local\Microsoft\OneNote\16.0\ using something like Explorer
• Options: You can either just plain delete the cache folder, or (recommended just to be on the safe side) rename it to cache.BAK
• Start up OneNote again; the next time you start it, it'll take a minute to re-download your notebook, and it should never ask to sync again

Be sure and comment to let us know whether this also worked (or not) for you as well!

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