# LibTmux.Server.LockAsync

- **Module:** LibTmux
- **Package:** LibTmux
- **Language:** C#
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-dotnet/blob/cf34b255c896d19a97e7d7fabea58609c916012d/src/LibTmux/Server.Administration.cs#L78
- **Page:** https://libtmux.org/en/csharp/latest/reference/libtmux-server-lockasync/

tmux command: [`lock-server`](/en/tmux/latest/manual/lock-server/)

```
LibTmux.Server.LockAsync(cancellationToken: CancellationToken) -> Task
```

Locks every client attached to this server.

## Parameters

- `cancellationToken` (`CancellationToken`): Cancels the tmux command.