Windows may be deleting this device as a result of brief difficulties. When (Code 21) displays, restarting the computer may fix the issue. Simply click on the Windows button, go to the Power menu, and pick Restart. Fixing Disney Plus Login Error Codes 9, 21, and 14 as of March 27, 2020 Your modem and router should both be turned off and unplugged. Ideally, wait for one minute. Connect your modem now and wait for a complete connection. Use your router in a similar manner. Turn on your smartphone after plugging it in. More things… • Aug 9, 2020