---
title: UnregisterNotification
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 18.4+, macOS 10.14+]
path: iokit/iousbinterfaceinterface942/2977253-unregisternotification
---

# UnregisterNotification

## Declaration

```occ
IOReturn (*UnregisterNotification)(void *self, UInt64 registrationToken);
```