Yesterday, I handled an incident similar to all of yours. One question - do each of your apps validate the receipt locally and on each launch of the app. It would seem coincindental that this failure appeared the same time as that for the Mac App Store application security certifcate problem occurred. My contacts tell me that the Mac App Store issue pertained only to Mac Apps, and should not have occurred with iOS apps. It would have helped to have a specific failure indication, but unfortunately, most apps disable logging for production apps. From a security point of view, this is desirable, however, from a debugging point of view, log statements to the console can provide one with information about the failure.The two methods I hear that work1. Restore purchases, which would update the receipt and2. Reinstall the app, which would also result in the updated receipt.rich kubota - rkubota@apple.comdeveloper technical support CoreOS/Hardware/MFI