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

# NEURLFilterManager.Error.configurationStale

The system needs to load the filter configuration.

## Declaration

```swift
case configurationStale
```

## See Also

### Configuration errors

- [NEURLFilterManager.Error.configurationUnchanged](networkextension/neurlfiltermanager/error/configurationunchanged.md)
- [NEURLFilterManager.Error.configurationInvalid](networkextension/neurlfiltermanager/error/configurationinvalid.md)
- [NEURLFilterManager.Error.configurationDisabled](networkextension/neurlfiltermanager/error/configurationdisabled.md)
- [NEURLFilterManager.Error.configurationCannotBeRemoved](networkextension/neurlfiltermanager/error/configurationcannotberemoved.md)
- [NEURLFilterManager.Error.configurationPermissionDenied](networkextension/neurlfiltermanager/error/configurationpermissiondenied.md)
- [NEURLFilterManager.Error.configurationInternalError](networkextension/neurlfiltermanager/error/configurationinternalerror.md)
- [NEURLFilterManager.Error.configurationNotLoaded](networkextension/neurlfiltermanager/error/configurationnotloaded.md)