Application Not Automatically Launching in Device and Getting Error on Xcode

Application not automatically launching in device and getting error on xcode

That is really annoying. This error happens in a number of different situations. Sometimes restarting the Xcode, fixes the problem. If not, follow these steps:

Disconnect your device.

Delete the app from your device.

Quit Xcode (Do not just simply close the window, quit it)

Delete derived data folder (~/Library/Developer/Xcode/DerivedData/-gbrvhlvwmpiobxdujegtghggrffp - or something like that)

Now start Xcode once again, connect device and run the project. It should work fine.

from DhilipSiva blog

Install claimed to have succeeded, but application could not be found on device

I ran into the same issue while testing a Cordova app on iOS 13 via XCode 11 Beta 4.
Building via the legacy system solved it (File > Workspace Settings... > Build System > Legacy Build System).

Hope it helps

Xcode is not launching my app for debugging

I've been able to solve this problem by Changing Debugger to LLDB, instead of GDB, on the Run Tab, using Build Configuration -> DEBUG, by selecting Edit Scheme (On the right of the Stop Button).

Xcode will run app on simulator but not on device

With Mountain Lion and the latest version of Xcode (4.4.4F250), none of the suggestions in this thread worked directly (clean, clean project, remove derived data folder, etc). This sequence did. From DhilipSiva:

1. Disconnect your device
2. Delete the app from your device
3. Quit Xcode (Don't just simply close the window, quit it)
4. Delete derived data folder rm -fr ~/Library/Developer/Xcode/DerivedData (console)
5. Start Xcode,connect device & run the project

Xcode error: Could not launch app - unable to attach

You are not doing anything wrong; it happens from time to time. There is no need to clear data and restart the Mac. Just try the following:

• Unplug and plug the device back in.

• If still happens, restart Xcode.

Can not launch the app on device

Clean your application folder and rebuild it

Xcode process launch failed: Security

If you get this, the app has installed on your device. You have to tap the icon. It will ask you if you really want to run it. Say “yes” and then Build & Run again.

As from iOS 9, it is required to go to Settings → General → Device Management → Developer App → Trust`.

On some versions of iOS, you will have to go to Settings → General → Profile instead.

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