# LibTmux.Server.FindWindowAsync

- **Module:** LibTmux.Server
- **Package:** LibTmux
- **Language:** .NET
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-dotnet/blob/320dc64f4b8b7815842471327a5e6b84a1499bf8/src/LibTmux/Server.Identity.cs#L153
- **Page:** https://libtmux.org/en/dotnet/latest/reference/libtmux-server-findwindowasync/

```
LibTmux.Server.FindWindowAsync(id: WindowId, cancellationToken: CancellationToken) -> Task<Window?>
```

Reads one window by identifier, returning null when it is absent.

A handle that has not found a live server yet discovers one first.

## Parameters

- `id` (WindowId): The window identifier.
- `cancellationToken` (CancellationToken): Cancels the tmux command.

## Returns

A materialized window, or null after a successful read finds no match.

## Raises

- `LibTmuxException`: The lookup failed, including an absent daemon.