---
title: "unregisterAvailabilityObserver(_:)"
framework: photos
role: symbol
role_heading: Instance Method
path: "photos/phphotolibrary/unregisteravailabilityobserver(_:)"
---

# unregisterAvailabilityObserver(_:)

Unregisters an object from observing changes to the photo library’s availability.

## Declaration

```swift
func unregisterAvailabilityObserver(_ observer: any PHPhotoLibraryAvailabilityObserver)
```

## Parameters

- `observer`: The observer object to unregister.

## See Also

### Observing Library Availability

- [register(_:)](photos/phphotolibrary/register(_:)-gm0a.md)
- [PHPhotoLibraryAvailabilityObserver](photos/phphotolibraryavailabilityobserver.md)
- [unavailabilityReason](photos/phphotolibrary/unavailabilityreason.md)