HOW TO DOWNLOAD AADHAR CARD FROM OFFICIAL WEBSITE:-

first visit official site www.uidai.gov.in and go to Download Aadhaar link in leftmost of the webpage one new tab will open and ask some personal details like enrollment id, aadhar no, and VID .
select one of them and one OTP(one time password) will sent in your registered mobile no after click on request OTP. submit OTP and then click on download aadhar your aadhar will be downloaded with in minutes or second after that it will required a security code to unlock your e-aadhar you can unlock the file with combination of first four latter of your name(caps lock on) and year from your date of birth file will be unlocked.