iOS 12 iPad Denied Launch Request - Xcode

Question

I've been updating an application for more than 5 years without problems, until yesterday.

I updated my iPad to iOS 12, but, each time I try to run it, I got the message:

iPad has denied the launch request

I tested in other physical devices with iOS 11 and simulators, and this error happens only with the devices with iOS 12.

What I tried to solve this?

• Re-generate my certificates in the Apple Developer page.
• Editing my scheme to 'Debug Configuration' to 'Release' and checking and unchecking 'Debug executable'.
• Restart my Mac and restart the iPad
• Enabling and disabling 'Wait for executable to be launched'

And also, each solution of this thread: Xcode 9 error: "iPhone has denied the launch request"

And after try each one of those alternatives, the problem persist only with the devices WITH iOS 12.

Someone has an idea about how can solve this?

UPDATE I debugged my app, and this is whole the log:

predeterminado  10:33:00.516648 -0600   trustd  cert[0]: MissingIntermediate =(leaf)[force]> 0
predeterminado  10:33:00.516722 -0600   trustd  cert[0]: NonEmptySubject =(path)[]> 0
predeterminado  10:33:00.521320 -0600   SpringBoard [com.mycompany.myapp] Generating image data for snapshot: <XBApplicationSnapshot: 0x1115c11f0; identifier: 5E831360-7FEE-4255-A6FB-08712EF1D226; launchInterfaceIdentifier: __from_UILaunchStoryboardName__; contentType: GeneratedDefault> {
    creationDate = 20 de septiembre de 2018, 10:33:00 a. m. GMT-6;
    keepsImageAccessUntilExpiration = NO;
    hasGenerationContext = NO;
    context = {
        contentType = GeneratedDefault;
        fullScreen = YES;
        referenceSize = {1024, 1366};
        interfaceOrientation = LandscapeLeft;
        additionalContext = {
            statusBarSettings = <XBStatusBarSettings: 0x282f43d00; hidden: NO; style: 0x0; backgroundActivityEnabled: NO>;
        }
    }
    imageContext = {
        scale = 2.0;
        opaque = YES;
        fileRelativeLocation = none;
    }
}
predeterminado  10:33:00.585893 -0600   SpringBoard com.mycompany.myapp:10:11:3:1:Application replaced
predeterminado  10:33:00.592674 -0600   SpringBoard [com.mycompany.myapp] Application installed using default data provider
predeterminado  10:33:00.638304 -0600   dasd    com.apple.CFNetwork-cc-87-19005-Task <6A4245D9-BABF-4974-899B-B744DCB219AE>.<com.apple.cloudkit.cloudd>.<route=usmia-edge.icloud-content.com:outOfProcess=T:allowExpensive=T:powerNap=F:adaptive=T:app=com.apple.mobileslideshow:2app=com.apple.mobileslideshow.PhotosMessagesApp:disc=T:retry=F:pool=com.apple.cloudkit.BackgroundConnectionPool:uuid:C3F50637-0E71-4FCD-A8B5-DB01E2F3D518>.<1>:9D4C2B:[
    {name: ApplicationPolicy, policyWeight: 5.000, response: {Decision: Can Proceed, Score: 0.31}}
    {name: DeviceActivityPolicy, policyWeight: 10.000, response: {Decision: Can Proceed, Score: 0.60}}
 ] sumScores:58.471249, denominator:65.910000, FinalDecision: Can Proceed FinalScore: 0.887138}
predeterminado  10:33:00.662238 -0600   SpringBoard [com.mycompany.myapp] Snapshot data for <XBApplicationSnapshot: 0x1115c11f0; …08712EF1D226> written to file: /private/var/mobile/Containers/Data/Application/1DB50DD3-CF52-4498-854F-C0939D28ECC0/Library/Caches/Snapshots/com.mycompany.myapp/[e-mail]
predeterminado  10:33:00.666489 -0600   trustd  cert[0]: MissingIntermediate =(leaf)[force]> 0
predeterminado  10:33:00.687764 -0600   TVRemoteConnectionService   XPC: Recieved an application registered LaunchEvent
predeterminado  10:33:00.909692 -0600   trustd  cert[0]: MissingIntermediate =(leaf)[force]> 0
predeterminado  10:33:00.910738 -0600   trustd  cert[0]: SubjectCommonName =(leaf)[]> 0
predeterminado  10:33:00.910872 -0600   trustd  cert[0]: LeafMarkerOid =(leaf)[]> 0
predeterminado  10:33:00.912183 -0600   trustd  cert[0]: MissingIntermediate =(leaf)[force]> 0
predeterminado  10:33:00.912253 -0600   trustd  cert[0]: AnchorApple =(path)[]> 0
predeterminado  10:33:00.912321 -0600   trustd  cert[0]: ChainLength =(path)[]> 0
predeterminado  10:33:00.912399 -0600   trustd  cert[0]: IssuerCommonName =(path)[]> 0
predeterminado  10:33:00.943350 -0600   trustd  cert[0]: MissingIntermediate =(leaf)[force]> 0
predeterminado  10:33:00.943416 -0600   trustd  cert[0]: NonEmptySubject =(path)[]> 0
predeterminado  10:33:00.972795 -0600   trustd  cert[1]: AnchorTrusted =(leaf)[force]> 0

Answer 1

This issue can be resolved by unchecking Debug executable in Edit Scheme.

Answer 2

Here’s a solution that doesn’t involve editing the scheme and therefore makes possible to use the breakpoints as usual.

Looking in the Keychain access, searching for the keyword "developer" I found out that my iPhone certificate was flagged as "invalid" in red. So here's what I've done:

1. I opened Keychain access and searched for the keyword "developer".
2. I deleted the "iPhone Developer" certificate (if you have a problem with another device make sure to delete the right one).
3. Then I deleted the "Apple Worldwide Developer Relations Certification Authority" and the "Developer ID Certification Authority" too.

After that everything worked as usual and I have been able to launch the app on my iPhone.

There’s also a video on YouTube showing this method.

Answer 3

Something that worked for me was to:

• check the "Automatically manage signing"

That way I could make it work

That tells me tha maybe the error is somewhere in the provisioning profile.

Answer 4

After days of research and thanks for the help @Little Green Viper, I found a solution.

Basically, some Apple Worldwide Developer Relations Certification Authority weren't working after the update, but it was able to compile successful for the iOS 11. Then, the most risky solution is deleting all the Apple Worldwide Developer Certificates, BUT before doing that, try creating a new user on your Mac.

(System Preferences → Users and groups → New User) that should work.

Now you have to options, work in the new user or re-sign the certificates. In my personal case, I picked up the first option.

Answer 5

I fixed this issue by deleting the certificates in keychain and restating the Xcode again. below are the steps :

1) In keychain : System--> all items--> delete - Apple Worldwide Developer Relations Certification Authority.

2) Restart Xcode again.

this worked for me.

Answer 6

Another possible solution: simply power down your device, and start it up again. Build to the device again.