If an error occurs with the onedrive client, the tray icon does not give an indication that there has been an error. Even clicking on the icon still shows "Synchronizing...". The only way to see that there has been a problem is by manually opening the Recent Events window and basically keeping that open at all times.
Suggestion:
If an error occurs from the onedrive client, change the tray icon to have a red X (or some other indication that something is wrong), and change the text "Synchronizing..." to "ERROR SYNCING" or similar.
In my case, I had changed my outlook password and updated all the other tools that rely on it, but had forgotten about this one. There could be other reasons for onedrive errors though.
If an error occurs with the onedrive client, the tray icon does not give an indication that there has been an error. Even clicking on the icon still shows "Synchronizing...". The only way to see that there has been a problem is by manually opening the Recent Events window and basically keeping that open at all times.
Suggestion: If an error occurs from the onedrive client, change the tray icon to have a red X (or some other indication that something is wrong), and change the text "Synchronizing..." to "ERROR SYNCING" or similar.
In my case, I had changed my outlook password and updated all the other tools that rely on it, but had forgotten about this one. There could be other reasons for onedrive errors though.
Note that this might be similar to #14