Starting August 4 new certificate will be available via publicKeyUrl. Previous certificate will be no longer available. Apps should always request certificate via this property. Caching this certificate will result in an error.

Apple Developer: Get ready for a new Game Center authentication certificate

More info: Apple Developer Forums

Reference: PSA: Apps using Apple’s Game Center must be updated with new authentication certificate



Use Game Center recommended approach with certificates.

QA engineer:

Check that app behaves correctly.


Plan necessary updates, if needed.

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