Don’t Update To MacOS 10.13.4 If You Use Duet Display

Don’t Update To MacOS 10.13.4 If You Use Duet Display

With all the excitement of the iOS 11.3 release, you may not have noticed that Apple also unleashed macOS 10.13.4 on the world. The latest Mac update includes a bunch of smaller fixes, with a focus on “stability, performance, and security”, but if you’re using Duet Display you should avoid the newest version of macOS at all costs.

Duet Display, a popular app that turns your iPad into a second screen for your Mac, announced this week that a bug in Apple’s update blocks the software from working. The company doesn’t have a solution at the moment, instead suggesting that you stick with macOS 10.13.3 until a fix is available.

If you’ve never heard of Duet Display, the app is definitely worth checking out — assuming you have an iPad on hand and you haven’t already updated to macOS 10.13.4. All you need is a wired connection and you can turn your tablet into a fully-functional secondary screen running macOS.

The app also adds a MacBook Pro-style Touch Bar to your iPad while it’s connected and if your iPad supports the Apple Pencil, it works in Duet Display, too.


  • Well, it’s true. After many, many hours of using Duet productively, I innocently and unknowingly upgraded to 10.13.4 and Duet don’t work. A search led me to this site – thank you. Did Duet advise users?

    Anyway, what’s the usual way forward in these cases?

    How long might it take? Anyone know?

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