# IStreamPubSub.UnregisterProducer(QualifiedStreamId, GrainId, CancellationToken)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.streams.istreampubsub/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.streams.istreampubsub/methods/)

[Source](https://github.com/dotnet/orleans/blob/1644940b035c7bdf215a4fd7135757c06bcfe9ec/src/Orleans.Streaming/Providers/IStreamProviderRuntime.cs#L108)

```csharp
public virtual Task UnregisterProducer(QualifiedStreamId streamId, GrainId streamProducer, CancellationToken cancellationToken)
```

Unregisters a stream producer.

### Parameters

- `streamId` (`QualifiedStreamId`): The stream identifier.
- `streamProducer` (`GrainId`): The producer identifier.
- `cancellationToken` (`CancellationToken`): The cancellation token.

### Returns

A `System.Threading.Tasks.Task` representing the operation.