---
title: account.updateUsername
description: Changes username for the current user.
image: https://docs.madelineproto.xyz/favicons/android-chrome-256x256.png
redirect_from: /API_docs/methods/account_updateUsername.html
---
# Method: account.updateUsername
[Back to methods index](index.md)
Changes username for the current user.
### Parameters:
| Name | Type | Description | Required |
|----------|---------------|-------------|----------|
|username|[string](../types/string.md) | 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](../types/User.md)
### Can bots use this method: **NO**
### MadelineProto Example ([now async for huge speed and parallelism!](https://docs.madelineproto.xyz/docs/ASYNC.html)):
```php
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:
```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|
|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|