> For the complete documentation index, see [llms.txt](https://kb.heathen.group/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kb.heathen.group/old-kb/old-toolkit-for-steamworks/unreal/blueprint-nodes/functions/join-lobby.md).

# Join Lobby

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## Introduction

Invite another user to the lobby.\
\
If the specified user clicks the join link, a [Game Lobby Join Requested](/old-kb/old-toolkit-for-steamworks/unreal/blueprint-nodes/events/lobby-join-requested.md) callback will be posted if the user is in-game, or if the game isn't running yet then the game will be automatically launched with the command line parameter `+connect_lobby <64-bit lobby Steam ID>` instead.

### Lobby Id

The Steam ID of the lobby to invite the user to

### Callback

An event that will be called when the process completes and will indicate the results of the request.

* Lobby Id\
  The lobby joined
* Blocked\
  Was the join request blocked such as from other members of the lobby, VAC, etc.
* Response\
  The [UEChatRoomEnterResponse ](/old-kb/old-toolkit-for-steamworks/unreal/blueprint-nodes/enumerators/uechatroomenterresponse.md)response to the user joining the lobby

## Nodes

<figure><img src="/files/dO25sL86Dole7ieupqJl" alt=""><figcaption></figcaption></figure>