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<h1 id="dev_page_title">account.updateUsername</h1>
<div id="dev_page_content"><p>Changes username for the current user.</p>
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<li><a href="?layer=1">1 – Base layer</a></li><li><a href="?layer=2">2 – New userpic notifications</a></li><li><a href="?layer=3">3 – Send message can trigger link change</a></li><li><a href="?layer=4">4 – Check-in chats</a></li><li><a href="?layer=5">5 – Localized SMS, localized notifications</a></li><li><a href="?layer=6">6 – Foursquare integration</a></li><li><a href="?layer=7">7 – Added wallPaperSolid</a></li><li><a href="?layer=8">8 – Added end-to-end encryption</a></li><li><a href="?layer=9">9 – Improved big files upload perfomance</a></li><li><a href="?layer=10">10 – Improved chat participants updates</a></li><li><a href="?layer=11">11 – Improved secret chats</a></li><li><a href="?layer=12">12 – New dynamic support</a></li><li><a href="?layer=13">13 – Audio, video MIME; contacts import retry; new secret actions</a></li><li><a href="?layer=14">14 – Notify settings sync, blacklist sync</a></li><li><a href="?layer=15">15 – Modified getHistory offset behaviour</a></li><li><a href="?layer=16">16 – Split sendCode into 2 parts</a></li><li><a href="?layer=17">17 – Added custom typing, introduced message flags</a></li><li><a href="?layer=18">18 – Added usernames</a></li><li><a href="?layer=23">23 – Stickers for secret chats</a></li><li><a href="?layer=105">105 – Scheduled messages, Cloud themes</a></li><li><a href="?layer=108">108 – Login with QR code</a></li><li><a href="?layer=109">109 – Polls v2</a></li><li><a href="?layer=110">110 – People Nearby 2.0, Bank card entity</a></li><li><a href="?layer=111">111 – Folders, Broadcast Stats</a></li><li><a href="?layer=112">112 – Old featured stickers, generic dice, poll timer, poll solution</a></li><li><a href="?layer=113">113 – PSA</a></li><li><a href="?layer=114">114 – Video thumbs for GIFs</a></li><li><a href="?layer=115">115 – Peek Channel Invite</a></li><li><a href="?layer=116">116 – Group Stats, Profile Videos</a></li><li><a href="?layer=117">117 – WebRTC Phone Calls</a></li><li><a href="?layer=118">118 – Callback with 2FA, Countries list</a></li><li><a href="?layer=119">119 – Comments in channels, Threads, Anonymous Admins</a></li><li><a href="?layer=120">120 – Multipins, Message Stats, GeoLive v2</a></li><li><a href="?layer=121">121 – SVG-based Outlines for Stickers</a></li><li><a href="?layer=122">122 – Voice Chats</a></li><li><a href="?layer=123">123 – Voice Chat improvements</a></li><li><a href="?layer=124">124 – Expiring Invite links</a></li><li><a href="?layer=125">125 – Voice Chats in Broadcasts</a></li><li><a href="?layer=126">126 – Ban channels in channels</a></li><li><a href="?layer=127">127 – Payments in channels</a></li><li><a href="?layer=128">128 – Microthumbs for User/Chat profile photos</a></li><li><a href="?layer=129">129 – Video Chats</a></li><li><a href="?layer=130">130 – Custom placeholder for bot reply keyboards</a></li><li><a href="?layer=131">131 – Reset 2FA Password after a week</a></li><li><a href="?layer=132">132 – Chat themes</a></li><li><a href="?layer=133">133 – 64-bit IDs for User/Chat</a></li><li><a href="?layer=134">134 – Chat Requests, Shared Media Calendar</a></li><li><a href="?layer=135">135 – Send Message As a Channel</a></li><li><a href="?layer=136">136 – Reactions</a></li><li><a href="?layer=137">137 – Translations</a></li><li><a href="?layer=138">138 – GIF Sticker Packs</a></li><li><a href="?layer=139"><strong>139 – RTMP streaming</strong></a></li>
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<pre class="page_scheme"><code><a href="/constructor/userEmpty" >userEmpty</a>#d3bc4b7a id:<a href="/type/long" >long</a> = <a href="/type/User" >User</a>;
<a href="/constructor/user" >user</a>#3ff6ecb0 flags:<a href="/type/%23" >#</a> self:flags.10?true contact:flags.11?true mutual_contact:flags.12?true deleted:flags.13?true bot:flags.14?true bot_chat_history:flags.15?true bot_nochats:flags.16?true verified:flags.17?true restricted:flags.18?true min:flags.20?true bot_inline_geo:flags.21?true support:flags.23?true scam:flags.24?true apply_min_photo:flags.25?true fake:flags.26?true id:<a href="/type/long" >long</a> access_hash:flags.0?<a href="/type/long" >long</a> first_name:flags.1?<a href="/type/string" >string</a> last_name:flags.2?<a href="/type/string" >string</a> username:flags.3?<a href="/type/string" >string</a> phone:flags.4?<a href="/type/string" >string</a> photo:flags.5?<a href="/type/UserProfilePhoto" >UserProfilePhoto</a> status:flags.6?<a href="/type/UserStatus" >UserStatus</a> bot_info_version:flags.14?<a href="/type/int" >int</a> restriction_reason:flags.18?<a href="/type/Vector%20t" >Vector</a><<a href="/type/RestrictionReason" >RestrictionReason</a>> bot_inline_placeholder:flags.19?<a href="/type/string" >string</a> lang_code:flags.22?<a href="/type/string" >string</a> = <a href="/type/User" >User</a>;
---functions---
<a href="/method/account.updateUsername" class="current_page_link" >account.updateUsername</a>#3e0bdd7c username:<a href="/type/string" >string</a> = <a href="/type/User" >User</a>;</code></pre></p>
<h3><a class="anchor" href="#parameters" id="parameters" name="parameters"><i class="anchor-icon"></i></a>Parameters</h3>
<table class="table">
<thead>
<tr>
<th>Name</th>
<th style="text-align: center;">Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><strong>username</strong></td>
<td style="text-align: center;"><a href="/type/string">string</a></td>
<td>username or empty string if username is to be removed<br>Accepted characters: a-z (case-insensitive), 0-9 and underscores.<br>Length: 5-32 characters.</td>
</tr>
</tbody>
</table>
<h3><a class="anchor" href="#result" id="result" name="result"><i class="anchor-icon"></i></a>Result</h3>
<p>Returns updated information on the user in a <a href="/type/User">User</a> type object.</p>
<h3><a class="anchor" href="#possible-errors" id="possible-errors" name="possible-errors"><i class="anchor-icon"></i></a>Possible errors</h3>
<table class="table">
<thead>
<tr>
<th>Code</th>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>400</td>
<td>USERNAME_INVALID</td>
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<td>The provided username is not valid.</td>
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</tr>
<tr>
<td>400</td>
<td>USERNAME_NOT_MODIFIED</td>
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<td>The username was not modified.</td>
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</tr>
<tr>
<td>400</td>
<td>USERNAME_OCCUPIED</td>
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<td>The provided username is already occupied.</td>
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