When I launch XCode and run it, after the app is installed on the actual device, it immediately crashes and XCode displays the following message... message Could not launch “MyAppXXX” Domain: IDEDebugSessionErrorDomain Code: 3 Failure Reason: ***'s iPhone has denied the launch request. Internal launch error: process launch failed: Unspecified process launch failed: Unspecified Domain: IDEDebugSessionErrorDomain Code: 3 What I did 1, Run KeyChain and delete all the development certificates on my Mac. Restart, Xcode-Product-Clean, XCode-Product-Rebuild(and generate certificates), install App, and Run. 2, Delete all .mobileprovision in ~/Libray/MobileDevice/Provisioning Profiles. Restart, Xcode-Product-Clean, XCode-Product-Rebuild, install App, and Run. 3, Replace Bundle Identifier from wildcard to correct Identifier. Restart, Xcode-Product-Clean, XCode-Product-Rebuild, install App, and Run. 4, From Mac's Terminal, run the command "sudo DevToolsSecurity -enable". Restart, Xcode-Product-Clean, XCode-Product-Rebuild, install App, and Run. ...None of the above were able to resolve the issue. Note XCode 11.3 iOS 12.4 MacOS Mojave 10.14.6 It works fine on the iPhone simulator. There are no profiles that I can choose in iPhone-Settings-General-Profile. From XCode-Window-Device and Simulators-(rigt click on my device's name)-Show provisioning profiles..., I can see that the Provisioning Profile of my bundle has been installed.