After enabling Enhanced Security for an existing iOS project (mixed Objective-C / Swift) I get the linker error: Library 'c++polyfills' not found This happens when compiling for a simulator as run destination. Device builds (debug) or archiving a release build works. However I need to be able to test on a simulator... Xcode version is 26.4.1, Simulator uses iOS 26.4.1

Hi, I have a macOS app distributed through the App Store that uses an app group to share data with app extensions. The group identifier has the form: .group. In Xcode 26 I am now asked to convert the project to profile based app groups (like on iOS). My question is: Can I convert the project to profile based app groups and will the existing app group (which is prefixed with the Team ID) continue to work (and will exiting users still be able to access their data). If yes, should I add the app group with or without the Team ID prefix to the profile.

We extended the ASCredentialProviderViewController in our app to provide passkeys and everything seems to be working fine (from the user's perspective). But we are curious why prepareCredentialListForServiceIdentifiers:requestParameters: is never called. Since: Passkey credentials seem only to be used / offered when added to the ASCredentialIdentityStore. We duplicated a passkey in our app for about 15 times and all passkeys for the same service were still offered by the credential chooser from iOS and not in our app (via "prepareCredentialListForServiceIdentifiers:requestParameters:"). we believe that in the current versions of iOS "prepareCredentialListForServiceIdentifiers:requestParameters:" is not used. It would be nice to get some clarification since it currently seems not possible to test the implementation of this method!

For a Mac app I would like to detect refunds. If there was a refund, how does AppTransaction.refresh behave? I cannot find a VerificationError indicating a canceled purchase (or is it: VerificationResult.VerificationError.revokedCertificate)