Open the OneDrive icon in the system tray
Select Help & Settings
Click Pause syncing or Quit OneDrive
To stop sync completely, open OneDrive Settings
Go to the Account tab
Click Unlink this PC
Confirm the unlink action
To stop OneDrive from starting automatically, open Task Manager
Go to the Startup tab
Disable Microsoft OneDrive
To disable folder sync, open OneDrive Settings
Go to the Backup or Sync and backup section
Turn off syncing for the folders you do not want backed up
To remove OneDrive from File Explorer, open Settings
Go to Apps
Uninstall Microsoft OneDrive