# Method: account.updateUsername

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Changes username for the current user.

# Parameters:

Name Type Description Required
username string username or empty string if username is to be removed
Accepted characters: a-z (case-insensitive), 0-9 and underscores.
Length: 5-32 characters.
Yes

# Return type: User

# Can bots use this method: NO

# MadelineProto Example (now async for huge speed and parallelism!):

if (!file_exists('madeline.php')) {
    copy('https://phar.madelineproto.xyz/madeline.php', 'madeline.php');
}
include 'madeline.php';

$MadelineProto = new \danog\MadelineProto\API('session.madeline');
$MadelineProto->start();

$User = $MadelineProto->account->updateUsername(['username' => 'string', ]);

Or, if you’re into Lua:

User = account.updateUsername({username='string', })

# Errors

Code Type Description
400 USERNAME_INVALID The provided username is not valid
400 USERNAME_NOT_MODIFIED The username was not modified
400 USERNAME_OCCUPIED The provided username is already occupied
406 AUTH_KEY_DUPLICATED An auth key with the same ID was already generated
401 AUTH_KEY_PERM_EMPTY The temporary auth key must be binded to the permanent auth key to use these methods.
401 SESSION_PASSWORD_NEEDED 2FA is enabled, use a password to login
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