Thanks for your reply. I'm entirely new to the xcode development. The application is created for client's internal purpose(not uploaded to App store) which is ad-hoc distribution . The application was created using Xcode managed profile which is going to expire on 10th September 2020. On the other hand, received email notification from apple regarding iOS Distribution Certificate which expires on 8th September 2020. How do Xcode managed profile and iOS Distribution certificate affect the Client's application? What are the immediate steps do I need to take? Should I renew iOS Distribution Certificate? (Not sure, I read article that we can only revoke and create new one). If I have to create new one, Do I need to repackage the ad-hoc distribution application? If the Ad-hoc distribution application already installed using ipa file. Can the client continue to use the application without any interruption? Thank you!!