Microsoft onedrive not working with Big Sur

I have your same problem with Microsoft 365. installed and uninstalled many times, it seems to work a little, then stops... I hope the problem can be solved soon.

How do you change the update channel?

Have you verified if OneDrive is a 64 bit App for 32 bit app. I don't use OneDrive and have zero knowledge of it. If it is 32 bit app it will not function. Neither Catalina nor Big Sur support 32 bit Apps.

I changed the MS Update Channel Option to BETA and downloaded/installed only the latest version of onedrive (20201.1005.0007) and it seems to work now. it is a beta version and i guess this will come soon as a preview or release but for me it is fine now.

Open the MS Autoupdate app through Spotlight, or you can open an app like Outlook and click Help > Check for Updates.

Click Advanced and select the update channel you wish to join. It will take a bit to process on the back end. You can open the Autoupdate app again, and manually check for updates--which should show you the insider channel releases that are available.

same Problem here..

So in a cruel joke I have my MSO apps installed from the App Store and those menus you mention aren't available. I'll wipe and install from MS.