# ObserverManager<TIdentity, TObserver>.Unsubscribe(TIdentity)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.core/orleans.utilities.observermanager-2/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.core/orleans.utilities.observermanager-2/methods/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Core/Utils/ObserverManager.cs#L141-L145)

```csharp
public void ObserverManager<TIdentity, Unsubscribe(TIdentity id)
```

Ensures that the provided `id` is unsubscribed.

### Parameters

- `id` (`TIdentity`): The observer.