Xcode 6 process launch failed: timed out trying to launch app
Solution 1:
You are using distribution provisioning profile rather than development profile. check this link
Solution 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.
EDIT: 2017/02: Solution still Woks (Thanks to @SalGad for information).
Solution 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.