+3I only recently updated Xcode to 26.0. While adding some features to my app, everything was running fine in the simulator. But when I tried to run it on an external device running iOS 26, I start getting this error:
Concurrency is only available in iOS 13.0.0 or newer
I’ve tried to Clean Build Folder to no avail.
Now when trying to run in simulator I’m getting this error.
Stored properties cannot be marked potentially unavailable with '@available'
Any suggestions?
Best answer by jacob-rakidzich
Have you tried updating the SDK. It’s now on version 5.41.0
+3I also just noticed this warning:
StoreKit Configuration file for scheme [AppName] can't be found at path "/path-to-xcode-project/[AppName].xcodeproj/SyncedProducts.storekit"
Any help in fixing this is appreciated.
+2Have you tried updating the SDK. It’s now on version 5.41.0
+2But since it was running fine in the simulator, it’s probably an Xcode 26 build artifacts issue. When this kind of thing has happened to me in the past, I’ve had to clean, quit Xcode, clear the derived data, and sometimes restart my computer.
If that doesn’t work, let me know.
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.
