---
title: NEURLFilterManager.Error.extensionCancelled
framework: networkextension
role: symbol
role_heading: Case
path: networkextension/neurlfiltermanager/error/extensioncancelled
---

# NEURLFilterManager.Error.extensionCancelled

The app extension cancelled the feature bring up.

## Declaration

```swift
case extensionCancelled
```

## See Also

### Extension errors

- [NEURLFilterManager.Error.extensionNotFound](networkextension/neurlfiltermanager/error/extensionnotfound.md)
- [NEURLFilterManager.Error.extensionFailedToLoad](networkextension/neurlfiltermanager/error/extensionfailedtoload.md)