Xcode 6 process launch failed: timed out trying to launch app

Question

I can't debug my app because when I run it, Xcode gives me the error:

Process launch failed: timed out trying to launch app

In the device I see a black screen and after the error message the app starts. How can I fix this?

I tried to change the code signing identity and the provisioning profile, and to refresh the provisioning profiles in the Xcode > Preferences > Accounts > Details tab.

I'm using Xcode Version 6.0.1 (6A317) with an iPad mini, running iOS 8.0 and a MacBook with OSX 10.9.4.

After this, if the iPad goes into sleep mode (the screen turns off) I can't wake it anymore; I have to do a soft reset.

Answer 1

You are using distribution provisioning profile rather than development profile. check this link

Answer 2

How to Fix:

I fix it with:

• clean project (Product > Clean)
• hard reset device (power button + home button)
• delete app from device
• close xcode
• CLOSE ITUNES (itunes must be closed)
• re-open Xcode and run!

I think that iTunes was the problem.

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EDIT: 2017/02: Solution still Woks (Thanks to @SalGad for information).

Answer 3

I am using Xcode 6.2, running on iPhone 4 with iOS 7.1.2, the problems happen to me as well.

It turned out that the Project and Targets' Code Signing settings are different from each other! And that's what is causing the issue.

To solve the issue, you must make sure that their Code Signing settings is the same.