It doesn't seem to be able to launch. It says "This version of Xcode is not compatible with this version of macOS."
So, does that mean that users who have updated to macOS 27 cannot submit apps to the App Store? Do I have to wait until Xcode 27 starts accepting submissions?
Environment: macOS 27.0 / Xcode 26.6 RC
You’re correct that Xcode 26 is not supported on macOS 27 beta. The other way around (Xcode 27 beta on macOS 26) is supported. I’ve found that the table in Developer > Support > Xcode is super helpful.
If you’re submitting apps to the App Store I recommend that you do that using a production version of Xcode running on a production version of macOS. If you only have a single Mac and you’ve updated it to macOS 27 beta then:
- You can downgrade it to macOS 26,
- Or use one partition for macOS 26 and another for macOS 27 beta,
- Or wait for macOS 27 to be released.
Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
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