# Sandbox.Network.LobbyInformation.IsOutdated

```csharp
bool IsOutdated { get; set; }
```

True if it can't be joined from this version of the game - it runs a different API version or network protocol.
Lobbies like this are only listed when asked for (Networking.QueryLobbies with includeOutdated). What it doesn't say
isn't held against it.

Declared in [Sandbox.Network.LobbyInformation](/api/Sandbox.Network.LobbyInformation).
Assembly: `Sandbox.Engine`.