[mysql] Error # 1045 - Cannot Log in to MySQL server -> phpmyadmin

We have installed PHPMyAdmin on a windows machine running IIS 7.0.
We are able to connect to MySQL using command-line, But we are not able to connect using PHPMyAdmin.
The error displayed is: Error #1045 Cannot log in to the MySQL server.
Can somebody please help?

PHP Version 5.4.0
mysqlnd 5.0.10 - 20111026 - $Revision: 323634 $
phpMyAdmin-3.5.4-rc1-all-languages.7z

EDIT :
I followed the link below with no success, mean i changed that password but phpmyadmin still has that error...
C.5.4.1.1. Resetting the Root Password: Windows Systems

Also there is thread like below in stack with no help :
Random error: #1045 Cannot log in to the MySQL server
but that error is not random -> i always have that error...

And this is config.inc.php file in phpmyadmin folder:

<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 * Config file view and save screen
 *
 * @package PhpMyAdmin-setup
 */

if (!defined('PHPMYADMIN')) {
    exit;
}

/**
 * Core libraries.
 */
require_once './libraries/config/FormDisplay.class.php';
require_once './setup/lib/index.lib.php';
require_once './setup/lib/ConfigGenerator.class.php';

$config_readable = false;
$config_writable = false;
$config_exists = false;
check_config_rw($config_readable, $config_writable, $config_exists);
?>
<h2><?php echo __('Configuration file') ?></h2>
<?php display_form_top('config.php'); ?>
<input type="hidden" name="eol" value="<?php echo htmlspecialchars(PMA_ifSetOr($_GET['eol'], 'unix')) ?>" />
<?php display_fieldset_top('', '', null, array('class' => 'simple')); ?>
<tr>
    <td>
        <textarea cols="50" rows="20" name="textconfig" id="textconfig" spellcheck="false"><?php
            echo htmlspecialchars(ConfigGenerator::getConfigFile())
        ?></textarea>
    </td>
</tr>
<tr>
    <td class="lastrow" style="text-align: left">
        <input type="submit" name="submit_download" value="<?php echo __('Download') ?>" class="green" />
        <input type="submit" name="submit_save" value="<?php echo __('Save') ?>"<?php if (!$config_writable) echo ' disabled="disabled"' ?> />
    </td>
</tr>
<?php
display_fieldset_bottom_simple();
display_form_bottom();
?>

where part of these codes should i change?

Thanks.

another thing that worked for me after everything didn't - change "localhost" in config.inc.php to 127.0.0.1

sudo service mysql stop

sudo mysqld --skip-grant-tables &

mysql -u root mysql

Change MYSECRET with your new root password

UPDATE user SET Password=PASSWORD('MYSECRET') WHERE User='root'; FLUSH PRIVILEGES; exit;

a number of answers; check out this one also; make sure that no instance of mysql is running, always brought by not ending your sessions well. get the super user rights with

sudo su

and type your password when prompted to (remember nothing appears when you type your password, so, don't worry just type it and press enter). Next go to your terminal and stop all mysql instances:

/etc/init.d/mysql stop

after that, go and restart the mysql services (or restart xampp as a whole). This solved my problem. All the best.

When you change your passwords in the security tab, there are two sections, one above and one below. I think the common mistake here is that others try to log-in with the account they have set "below" the one used for htaccess, whereas they should log in to the password they set on the above section. That's how I fixed mine.

For ubuntu users, your config.inc.php file should be like this

/* Authentication type */
$cfg['Servers'][$i]['auth_type'] = 'cookie';
$cfg['Servers'][$i]['user'] = 'username';
$cfg['Servers'][$i]['password'] = 'password';
/* Server parameters */
$cfg['Servers'][$i]['host'] = '127.0.0.1';
$cfg['Servers'][$i]['connect_type'] = 'tcp';
$cfg['Servers'][$i]['compress'] = false;
$cfg['Servers'][$i]['AllowNoPassword'] = false;
/**
 * phpMyAdmin configuration storage settings.
 */
/* User used to manipulate with storage */
// $cfg['Servers'][$i]['controlhost'] = '';
// $cfg['Servers'][$i]['controlport'] = '';
// $cfg['Servers'][$i]['controluser'] = 'pma';
// $cfg['Servers'][$i]['controlpass'] = '';

In mysql 5.7 the auth mechanism changed, documentation can be found in the official manual here.

Using the system root user (or sudo) you can connect to the mysql database with the mysql 'root' user via CLI. All other users will work, too.

In phpmyadmin however, all mysql users will work, but not the mysql 'root' user.

This comes from here:

$ mysql -Ne "select Host,User,plugin from mysql.user where user='root';"
+-----------+------+-----------------------+
| localhost | root | auth_socket |
|  hostname | root | mysql_native_password |
+-----------+------+-----------------------+

To 'fix' this security feature, do:

mysql -Ne "update mysql.user set plugin='mysql_native_password' where User='root' and Host='localhost'; flush privileges;"

More on this can also be found here in the manual.

If you are installing first time then please try login with username and password as root

In Linux I resolve this problem by going to the root command prompt type:

# mysqladmin -u root password 'Secret Phrase Here'

Then go back and login. Works every time!

If you logged into "phpmyadmin", then logged out, you might have trouble attempting to log back in on the same browser window. The logout sends the browser to a URL that looks like this:

http://localhost/phpmyadmin/index.php?db=&token=354a350abed02588e4b59f44217826fd&old_usr=tester

But for me, on Mac OS X in Safari browser, that URL just doesn't want to work. Therefore, I have to put in the clean URL:

http://localhost/phpmyadmin

Don't know why, but as of today, Oct 20, 2015, that is what I am experiencing.