---
title: kIOReturnCannotLock
framework: IOKit
role: symbol
role_heading: Global Variable
platforms: [Mac Catalyst 13.0+, macOS 10.9+, xcode 8.0+]
path: iokit/kioreturncannotlock
---

# kIOReturnCannotLock

## Declaration

```swift
var kIOReturnCannotLock: IOReturn { get }
```