Warn user when OneDrive is not synchronising for *any* reason
One of my clients reported they were unable to right-click on a file and share it. Upon investigation, it turned out that OneDrive was not synchronising but there was no visual indication that there was a problem, i.e. red cross on the OneDrive icon. So for many weeks, their local documents were not been backed up. No clue there was a problem when you clicked on the OneDrive icon. In fact, quite the opposite - it said "You're all set, all files in sync" when they clearly were not.
However, on opening the account page, where it says "Choose folders Stop Sync" here, it said "Start sync".
So for some reason their main OneDrive folder had stopped synchronising.
NOTE: they also had two SharePoint document libraries synchronised and they were working fine.
IMO if their main OneDrive account is configured but not working, then the icon should show the error tick.
I'm afraid that I was in a rush to fix this for the client so couldn't grab any screenshots but this isn't the first time I've come across OneDrive in such a state.