Are you seeing Error 1001: Device Not Registered on your screen? This is a hard block from the UIDAI management server indicating that your Mantra RD service renewal has lapsed.
To apply the ultimate Mantra mfs100 error code 1001 solution, you must process a recharge. Doing this via our portal utilizes Fast Activation technology.
Once your payment is successful, restart your Windows Service or clear your Android App Data. The error will vanish permanently.