%YOUR XAMPP file%\phpMyAdmin\config.inc.php
searching with auth_type
and set cookie
searching with AllowNoPassword
and set false
finally we got this.
/* Authentication type and info */
$cfg['Servers'][$i]['auth_type'] = 'cookie';
$cfg['Servers'][$i]['user'] = 'root';
$cfg['Servers'][$i]['password'] = '';
$cfg['Servers'][$i]['extension'] = 'mysqli';
$cfg['Servers'][$i]['AllowNoPassword'] = false;
$cfg['Lang'] = '';
Refer: https://stackoverflow.com/questions/17759776/how-to-get-login-option-for-phpmyadmin-in-xampp