# tmux.Session.ResolveActiveWindow

- **Module:** tmux.Session
- **Package:** github.com/libtmux/libtmux-go/tmux
- **Language:** Go
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-go/blob/5f808882015a975a65acc7f9da5b3ff0d5cbdc91/tmux/relations.go#L83
- **Page:** https://libtmux.org/reference/go/tmux-session-resolveactivewindow/

```
tmux.Session.ResolveActiveWindow(ctx: context.Context) -> (Window, error)
```

ResolveActiveWindow snapshots live tmux state and returns this session's sole exact active winlink. It returns [SnapshotLookupError] cardinality errors.