---
title: AccessorySensorUpdates.StreamError.connectionLost
framework: AudioAccessoryKit
role: symbol
role_heading: Case
platforms: [iOS 27.0+]
path: audioaccessorykit/accessorysensorupdates/streamerror/connectionlost
---

# AccessorySensorUpdates.StreamError.connectionLost

The XPC connection was permanently lost; the stream is finished.

## Declaration

```swift
case connectionLost
```