> ## Documentation Index
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> Use this file to discover all available pages before exploring further.

# XTaskQueueUnregisterWaiter

> XTaskQueueUnregisterWaiter

# XTaskQueueUnregisterWaiter

Unregisters a previously registered task queue waiter.

## Syntax

```cpp theme={null}
void XTaskQueueUnregisterWaiter(  
         XTaskQueueHandle queue,  
         XTaskQueueRegistrationToken token  
)  
```

### Parameters

*queue*   \_In\_\
Type: XTaskQueueHandle

The queue to remove the waiter from.

*token*   \_In\_\
Type: [XTaskQueueRegistrationToken](/reference/system/xtaskqueue/structs/xtaskqueueregistrationtoken)

The registration token returned from [XTaskQueueRegisterWaiter](/reference/system/xtaskqueue/functions/xtaskqueueregisterwaiter).

### Return value

Type: void

## Remarks

<Note>This function isn't safe to call on a time-sensitive thread. For more information, see [Time-sensitive threads](https://learn.microsoft.com/gaming/gdk/docs/gdk-dev/console-dev/overviews/threads/time-sensitive-threads).</Note>

If [XTaskQueueRegisterWaiter](/reference/system/xtaskqueue/functions/xtaskqueueregistermonitor) was previously invoked to register a waiter for a task queue, use `XTaskQueueUnregisterWaiter` to unregister the waiter identified by the `XTaskQueueRegistrationToken` specified in *token*. Once the specified waiter is unregistered, the Win32 handle is removed and the waiter callback is no longer invoked.

## Requirements

**Header:** XTaskQueue.h

**Library:** xgameruntime.lib

**Supported platforms:** Windows, XBOX One family consoles and XBOX Series consoles

## Conceptual documentation

* [Time-sensitive threads](https://learn.microsoft.com/gaming/gdk/docs/gdk-dev/console-dev/overviews/threads/time-sensitive-threads)

## See also

[XTaskQueueRegisterWaiter](/reference/system/xtaskqueue/functions/xtaskqueueregisterwaiter)\
[XTaskQueue members](/reference/system/xtaskqueue/xtaskqueue_members)\
[Asynchronous Programming Model](/build/core-features/common/async/async-programming-model)\
[Async Task Queue design](/build/core-features/common/async/async-task-queue-design)


## Related topics

- [XTaskQueueRegisterWaiter](/reference/system/xtaskqueue/functions/xtaskqueueregisterwaiter.md)
- [XTaskQueue](/reference/system/xtaskqueue/xtaskqueue_members.md)
- [XTaskQueueRegistrationToken](/reference/system/xtaskqueue/structs/xtaskqueueregistrationtoken.md)
- [Unity C# API wrappers for the GDK](/build/gdk-and-engines/unity/unity-api-wrappers.md)
- [How to: Using a task queue waiter](/build/core-features/common/async/async-task-queue-design-howto/using-task-queue-waiter.md)