App Installation Failed: Unknown Error Xcode 7

App installation failed: Unknown Error Xcode 7

This line in the device logs stood out to me, and hopefully you saw it too:

Failed to verify code signature of /private/var/mobile/Library/Caches/com.apple.mobile.installd.staging/temp.FvOJz0/extracted/FSS App.app/PlugIns/QuickSched.appex

This is saying that (although Xcode thought everything was OK at build time), your device rejected the code signature of your app extension.

There are a few solutions here, but in my personal experience, this issue can only be fixed by tinkering with the code signing settings for your app and app extension. Make sure that the app and app extension are being signed with the same certificate (although likely different provisioning profiles).

As others have recommended, I've also been able to fix this by running the Clean action in Xcode for the project, and also by deleting the derived data directories. But I have not always been successful with this.

Install additional required components unknown error occurs Xcode 11.0

It works, When I update the Xcode to latest version Xode 11.2.1.

Installing components...

Xcode Version 11.2.1

ipatool failed with an exception in xcode 9

For whole day I too struck by this issue I did many solutions but not working..... I did very small mistake one of the solution is

restart the Xcode & try. I tried this by wrongly that is close all projects finally close the Xcode (it works ), but I quit Xcode shortly

Final solution is close Xcode clearly (by closing every projects) and archive it...

I thing it’s helps you

Failed to launch simulated application: Unknown error

Recreating project step-by-step showed that it was directory structure.

I've had directory named 'resources' with resources for my application. That directory was added to the bundle as is (via Folder References feature).

When I renamed that directory to less common name, error went away.

So, never name any custom directories in the bundle 'resources'.

Guys from Xcode (or simulator) team could improve their error reporting. I've had to spend whole day debugging this issue. :-(

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