my.ini
#skip-federated
skip-grant-table=TRUE
config.inc.php
/* Authentication type and info */
$cfg['Servers'][$i]['auth_type'] = 'cookie';
$cfg['Servers'][$i]['user'] = 'your_user';
$cfg['Servers'][$i]['password'] = 'your_password';
$cfg['Servers'][$i]['extension'] = 'mysqli';
$cfg['Servers'][$i]['AllowNoPassword'] = false;
$cfg['Lang'] = '';
httpd-xampp.conf
Edit the apache/conf/extra/httpd-xampp.conf
Alias /phpmyadmin "c:/xampp/phpMyAdmin/"
<Directory "c:/xampp/phpMyAdmin">
AllowOverride AuthConfig
Require all granted
ErrorDocument 403 /error/XAMPP_FORBIDDEN.html.var
</Directory>