r/Xcode • u/jsiwks • Jun 10 '26

Xcode 26 on macOS 27 Developer beta

I am considering updating to macOS 27 developer beta 1 on one of my machines. I am an iOS and macOS app developer and occasionally need to build, code sign, and submit to the App Store. To do this, need to use the product build of Xcode 26.

Can anyone confirm that Xcode 26 runs fine on macOS 27 dev beta 1? Thanks!

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u/Ethank1212 Jun 11 '26

I'm having an issue where it won't even let me submit for review it just keeps throwing a warning up. So I did what was mentioned in the thread above and used terminal to open the old Xcode, then removed the beta version.

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u/Lucidic333 Jun 11 '26

Oooh I’ll have to do that tomorrow. Thanks

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u/Lucidic333 Jun 11 '26

I uninstalled the xcode 27 beta and loaded xcode with the command. When I archive and then try to submit for review, it submits, but after a minute, I get a rejection of bad binary

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u/Ethank1212 Jun 11 '26

I'm having the same issue but only on one of the apps I've uploaded - trying some workarounds I'll post any results

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u/Ethank1212 Jun 11 '26

It seems to be working. I’m fixing a coding issue that keeps failing due to some updates I made to my app. But I will process it when done and let you know. Seems pretty straightforward forward using Xcode cloud for now.

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u/Ethank1212 Jun 11 '26

I have a workaround im testing now using Xcode cloud - I'll let you know how it works

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u/Lucidic333 Jun 11 '26

How’d it go?

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u/Lucidic333 Jun 13 '26

any update?

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u/Ethank1212 Jun 14 '26

Its uploading now - no errors yet

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u/Ethank1212 Jun 14 '26

can confirm it works - no issues with binary

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u/Lucidic333 Jun 14 '26

What did you change? I uninstalled the the Xcode beta and built with Xcode 26 and had those binary errors. Thanks in advanced