1 Please check your internet connection first. If you use proxy or VPN, please disconnect it for a test.
2 It's recommended to reset OneDrive:
- Quit OneDrive. (Select the cloud icon in the top tray, then select Settings > Quit OneDrive.)
- Find OneDrive in your Applications folder.
- Right-click OneDrive and select Show Package Contents.
- Browse to the Contents > Resources folder.
- Double-click ResetOneDriveApp.command (or ResetOneDriveAppStandalone.command, if you're using the standalone app).
3 Then use Spotlight to search for OneDrive and reopen it. When choosing location, remember to select the previous OneDrive syncing location. This means your files won’t be downloaded again if they haven’t changed.
4 Could you please tell us where did you get the OneDrive application?
I suggest you may try to get OneDrive from "OneDrive release notes", that use standalone .pkg or use package from Mac App Store.
5 Start up your Mac in safe mode to troubleshooting any startup items.
Any updates, welcome to post back.
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