Restore a missing taskbar icon for OneDrive

1. Right-click the taskbar and select  Taskbar settings. 

2. Under Other system tray icons, turn on the option for Microsoft OneDrive, then look for the cloud icon in your taskbar.

If the option is on but you still can't see the icon you want, you may need to show hidden icons. Also, OneDrive icons appear in the taskbar only after you sync OneDrive to your computer.