Bumping this thread to add that we're seeing this issue on all iOS versions above 16.4 (including the latest, 16.5.1). We're also seeing the same issue on macOS 13.4 but, instead of disappearing after tapping "Invite Players", the GKMatchmakingViewController never shows up in the first place and hard-freezes our app until you force-quit it. This issue is 100% reproducible with even the simplest of examples. Removing the setting of the matchmakingMode works on all platforms before those releases: public func MatchMake() { let request = GKMatchRequest.init(); let gkvc = GKMatchmakerViewController.init(matchRequest: request); if #available(iOS 15.0, tvOS 15.0, macOS 12.0, *) { // Everything works across the board if we comment out the following line: gkvc?.matchmakingMode = GKMatchmakingMode.inviteOnly; } #if os(iOS) || os(tvOS) let viewController = UIApplication.shared.windows.first!.rootViewController; viewController?.present(gkvc!, animated: true); #else GKDialogController.shared().parentWindow = NSApplication.shared.keyWindow; GKDialogController.shared().present(gkvc!); #endif } I'm not including setting up the delegate in this example; the bugs happen either way. On iOS, the error callback in the delegate gives us the profoundly useless message "The operation couldn't be completed" with code -5900. We're also seeing the following errors logged in Xcode: [lifecycle] [u D149D291-903E-4D2E-BBB3-29137BBD5982:m (null)] [com.apple.GameCenterUI.GameCenterMatchmakerExtension(1.0)] Connection to plugin interrupted while in use. [lifecycle] [u D149D291-903E-4D2E-BBB3-29137BBD5982:m (null)] [com.apple.GameCenterUI.GameCenterMatchmakerExtension(1.0)] Connection to plugin invalidated while in use.

I'll also add that this bug happens on any 12.x version of OSX we've tested on; none of them work.

If anyone comes across this, we've found our solution. The "capabilities" are added via the "Identifiers" page and "Apple Arcade Operations" is available under "Additional Capabilities." Changing this also invalidated all our current provisioning profiles so those needed to be deleted then re-generated.