This setting lets you prevent users from selecting a local disk (internal or external) for storing backups. If this setting is enabled, the user will be blocked from selecting a local disk as a backup location. If this setting is disabled or not configured, users can select a local disk as a backup location. Fix: (1) GPO: Computer Configuration\Administrative Templates\Windows Components\Backup\Client!Prevent backing up to local disks (2) REG: HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Backup\Client!DisableBackupToDisk