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

# systemExtensionWillBecomeInactive(_:)

## Declaration

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

## Discussion

Discussion This delegate method will be called when a system extension is deactivated and is about to get uninstalled. The extension may still be running until the system is rebooted.