NSE mobile and web application does not facilitate password re-set option hence to change the password the you can log-in to  EXE  or web platform of NSE NOW and reset

Steps to reset password on NOW EXE Platform

  1. Please download latest NSE NOW version and install it. You can download from this link
  2. Click Forgot Password at the login screen

  3. Enter your PAN number and Date of Birth and press OK

  4. A new password is now emailed to your registered email account from support@nowonline.com . Please check your email and use the new password and change it on first login.