Can not upload using Xcode 26.5 release candidate

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I’m trying to upload my project using Xcode Release Candidate 26.5. However, when I upload it, I receive this error. Is this normal?

The server’s response was: “code = 90534; description = ‘Unsupported SDK or Xcode version. Your app was built with an SDK or version of Xcode that isn’t supported. Although you can use beta versions of SDKs and Xcode to build and upload apps to App Store Connect, you need to use the latest Release Candidates (RC) for SDKs and Xcode to submit the app. For details on currently supported SDKs and versions of Xcode, visit: https://developer.apple.com/news/releases.’”

Answered by DTS Engineer in 886809022

@MiladBigle Please look at this link where tells you the version you can use to submit to the App Store.

https://developer.apple.com/help/app-store-connect/release-notes/

Latest from 4/16: App Store Connect update You can now upload apps built with Xcode 26.4.1

Albert   Worldwide Developer Relations.

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Answer 1

DTS Engineer OP

Apple

1d

Thanks for the post, yes, the release candidate is not marked for submitting to the App Store on the release notes.

Yes, this is a very normal and well-documented App Store Connect error. App Store Connect has strict rules about which versions of Xcode and Apple SDKs can be used to submit apps. This error triggers when you try to upload an app built with a version of Xcode (or an iOS/macOS SDK) that Apple’s servers do not currently accept for App Store distribution.

If you are using a beta version or an RC that hasn't officially opened the gates for yet, you will get this exact rejection. Look at the release notes for that build https://developer.apple.com/documentation/xcode-release-notes/xcode-26_5-release-notes

Albert   Worldwide Developer Relations.

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Answer 2

MiladBigle OP

1d

@DTS Engineer We should update the app to this version. Please review the full list of changes—you can find it here: https://developer.apple.com/documentation/xcode-release-notes/xcode-26_5-release-notes

Also, please check the same issue reported in the Xcode 26 release candidate: https://developer.apple.com/forums/thread/799757

We need to ensure that all required Xcode versions are supported so developers can successfully upload code for a single app update using the latest SDK. Please confirm if we should proceed with the update. Best regards,

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Answer 3

DTS Engineer OP

Apple

1d

Accepted Answer

@MiladBigle Please look at this link where tells you the version you can use to submit to the App Store.

https://developer.apple.com/help/app-store-connect/release-notes/

Latest from 4/16: App Store Connect update You can now upload apps built with Xcode 26.4.1

Albert   Worldwide Developer Relations.

0