You cannot login right away. First you need to register. Please make sure you are on the right page: https://mcc.nic.in/UGCounselling/Candidate/CandidateVerify . You will have to enter Roll number, application number, Candidate's name, Mother's name, Date of Birth, Mobile number, Pin, Email Id, Security Pin and then click on Submit. Then you will receive an OTP at your registered mobile number. You will have to use it to go ahead. Please ensure you are following this process.