---
title: kAudioSessionNotInitialized
framework: audiotoolbox
role: symbol
role_heading: Global Variable
path: audiotoolbox/kaudiosessionnotinitialized
---

# kAudioSessionNotInitialized

An Audio Session function was called without first initializing the session. To avoid this error, call the AudioSessionInitialize function before attempting to use the session.

## Declaration

```swift
var kAudioSessionNotInitialized: Int { get }
```

## See Also

### Constants

- [kAudioSessionNoError](audiotoolbox/kaudiosessionnoerror.md)
- [kAudioSessionAlreadyInitialized](audiotoolbox/kaudiosessionalreadyinitialized.md)
- [kAudioSessionInitializationError](audiotoolbox/kaudiosessioninitializationerror.md)
- [kAudioSessionUnsupportedPropertyError](audiotoolbox/kaudiosessionunsupportedpropertyerror.md)
- [kAudioSessionBadPropertySizeError](audiotoolbox/kaudiosessionbadpropertysizeerror.md)
- [kAudioSessionNotActiveError](audiotoolbox/kaudiosessionnotactiveerror.md)
- [kAudioServicesNoHardwareError](audiotoolbox/kaudioservicesnohardwareerror.md)
- [kAudioSessionNoCategorySet](audiotoolbox/kaudiosessionnocategoryset.md)
- [kAudioSessionIncompatibleCategory](audiotoolbox/kaudiosessionincompatiblecategory.md)
- [kAudioSessionUnspecifiedError](audiotoolbox/kaudiosessionunspecifiederror.md)