---
title: "systemExtensionWillBecomeDisabled(_:)"
framework: System Extensions
role: symbol
role_heading: Instance Method
platforms: [macOS 15.1+]
path: "systemextensions/ossystemextensionsworkspaceobserver/systemextensionwillbecomedisabled(_:)"
---

# systemExtensionWillBecomeDisabled(_:)

## Declaration

```swift
optional func systemExtensionWillBecomeDisabled(_ systemExtensionInfo: OSSystemExtensionInfo)
```

## Discussion

Discussion This delegate method will be called when the user disables an already enabled system extension, or when the system extension is first installed and is in the disabled state.