Please use this link https://ntaneet.nic.in/ntaneet/online/GetCandAppno.aspx . Fill in the details. The Security pin is the alpha numerical code that is just above the "Submit" button. Enter it the way it is and then click on Submit. You will get your Registration number. For more information if you also have forgotten your password, please read our article: https://medicine.careers360.com/articles/neet-admit-card

Hii,

Firstly you should be careful for it. I think that you definitely know your mail id go for it and then click on forgot password. They will do some verification and then you can download it. or in case it is not working then you you can directly call administration for the same.