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Xcode 4.4 error - Timed out waiting for app to launch

yesterday I installed Xcode 4.4.

I'm working on a project which needs to run on ios 4.1 upwards, supporting iOS device with camera. Until I installed Xcode 4.4 everything went well, and I can test app on iphone 3gs and 4s. After I installed Xcode 4.4 I was unable to test app on iphone 3gs, and everytime I try to do it, xcode shows me that message: - Could not lauch "appname". timed out for app to lauch -

Does someone have any idea how to get rid of that error?

I had a similar issue when trying to debug an App with Ad-Hoc provisioning... Check which provisioning you're using, it seems ad-hoc provisioning cannot be used for debugging.

EDIT In fact, it seems only development provisioning profiles are Ok for debugging

方案配置 For me:
Under Edit Scheme
For the Run configuration
On the Info tab
For Build Configuration
I had Release selected

But, it needs to be on Debug to run locally on a device.

I had a similar issue. In my case the reason was that I changed the setting for Launch ( xcode -> product -> Edit Scheme) to Wait and forgot about it.

When I changed the setting back to Automatic, the app will launch as usual.

I also had same problem. I deleted old provisioning & distribution profiles from the testing devices and installed the modified profiles. The date of these provisioning profiles matter. The error timedout got solved.

Check which provisioning you are using, it seems that ad-hoc provisioning cannot be used for debugging. If your problem is not solve with above instruction then also try these:

 Stop the app from running in Xcode;
 Delete the app from the device (or Simulator);
 Select Product > Clean from the Xcode menu;
 Close Xcode;
 Close the Simulator (or restart the device);
 Restart your computer & then check.

Remove the app from the device/simulator and try again, should work. Looks to be a bug in xcode.

It is issue of Provisioning profile. I was using Distribution Provisioning Profile. Changed back to Development Provisioning profile from Developer portal and used that, Solved the issue.

This worked for me on XCode 4.6 iOS 6.1.2

  • Open Organizer
  • Select your device from the left
  • Add to Portal
  • Enter you Developer credentials
  • Close Organizer and in the project file under your target select "Build Settings" -> "Code Signing Identity" pick the profile "iOS Team Provisioning Profile"
  • Clean and run.

I had same problem now I resolved it ..

Follow these step to sort out the problem.

Step:1 Go to xcode folder like this

在此输入图像描述

Step2: Reach to folder xcode->DerivedData

Step3: Delete all folder inside of DerivedData

It will work for you Thanks

Try to remove you app from simulator and/or reset simulator settings.

Simulator settings could be different from old one.

Generally, resetting everything works well.

Old question but adding my solution for rare cases like mine. Removing app from device/ clean-build/ provisioning changes did not work for me. I restarted the Xcode and it started working fine.

In my case the cause turned out to be the launch daemon being unable to load the app icons and crashing. Even though it didn't look like a crash - the device and the OS were becoming very slow or totally unresponsive. I figured this by analysing the crash logs. (My icons were too large - about 2,500x2,500 - I simply forgot to reduce their sizes properly before adding them to resources). Hope this helps someone.

I tried all solution above with no success. But when I did complete cleanup of my iPhone 4S with iOS 7 this problem never occurred again.

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