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# OSSystemExtensionRequestDelegate

A type that receives updates about the progress of a request.

```
protocol OSSystemExtensionRequestDelegate : NSObjectProtocol
```

## Topics

### Handling Success and Failure

[`request(_:didFinishWithResult:)`](/documentation/SystemExtensions/OSSystemExtensionRequestDelegate/request(_:didFinishWithResult:))

Tells the delegate that the manager completed the request.

[`OSSystemExtensionRequest.Result`](/documentation/SystemExtensions/OSSystemExtensionRequest/Result)

The result of a completed request, possibly including additional information about the extension’s state.

[`request(_:didFailWithError:)`](/documentation/SystemExtensions/OSSystemExtensionRequestDelegate/request(_:didFailWithError:))

Tells the delegate the manager failed to complete the request.

### Handling Indeterminate Installs

[`requestNeedsUserApproval(_:)`](/documentation/SystemExtensions/OSSystemExtensionRequestDelegate/requestNeedsUserApproval(_:))

Tells the delegate that the user must grant approval before the manager can activate the extension.

[`request(_:actionForReplacingExtension:withExtension:)`](/documentation/SystemExtensions/OSSystemExtensionRequestDelegate/request(_:actionForReplacingExtension:withExtension:))

Tells the delegate that the user has a different version of the extension installed on their system.

[`OSSystemExtensionProperties`](/documentation/SystemExtensions/OSSystemExtensionProperties)

Properties that identify a specific version of a system extension.

[`OSSystemExtensionRequest.ReplacementAction`](/documentation/SystemExtensions/OSSystemExtensionRequest/ReplacementAction)

Actions for describing how the extension manager should resolve a version conflict.

### Instance Methods

[`request(_:foundProperties:)`](/documentation/SystemExtensions/OSSystemExtensionRequestDelegate/request(_:foundProperties:))


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