iOS 15 Untrusted Developer issue - xcode

Question

I have updated recently to a new iOS 15 and after I built and run my application in Xcode, while have been logged in with a same developer account as before iOS 15 installation, I get this message:
The operation couldn’t be completed. Unable to launch com.xyz.xyz.xyz
because it has an invalid code signature, inadequate entitlements or
its profile has not been explicitly trusted by the user.
and the error log:
Could not launch “my-project0name” Domain: IDEDebugSessionErrorDomain
Code: 3 Failure Reason: The operation couldn’t be completed. Unable to
launch com.xyz.xyz.xyz because it has an invalid code signature,
inadequate entitlements or its profile has not been explicitly trusted
by the user. User Info: {
DVTRadarComponentKey = 855031;
IDERunOperationFailingWorker = DBGLLDBLauncher;
RawUnderlyingErrorMessage = "The operation couldn\U2019t be completed. Unable to launch com.xyz.xyz.xyz because it has an invalid
code signature, inadequate entitlements or its profile has not been
explicitly trusted by the user."; }
System Information
macOS Version 11.6 (Build 20G165) Xcode 13.0 (19234) (Build 13A233)
Timestamp: 2021-09-21T12:36:18+02:00
Earlier (on iOS14), this could be solved by going to:
Settings.app -> General -> Profile -> Select Profile -> Trust
But now (on iOS15) I can't actually find it at that location. How would I fix this?

Answer 1

From what i understand, this might be a bug connected to iOS 15 / xcode 13.
I found a solution which is to create a new Apple ID and use it to sign your app in xcode.
You can add a new team by going into "Signing & Capabilities"-tab and select "Add account" where you select a team.
Once you've done this and run the application on your device again, the option to trust the application in Settings > General > Device Management should appear!

Answer 2

As #ujell pointed out. The provisioning profile generated prior iOS 15 is preventing installation on the new release. Therefore, you will need to generate a new provisioning profile for your app. Try the following:
Quit Xcode
Go to the directory of cached provisioning profiles (cd
~/Library/MobileDevice/Provisioning Profiles/)
Back up the existing
files to another directory
Remove all profiles listed under
~/Library/MobileDevice/Provisioning Profiles/
Launch Xcode
Install/run the app on your device
Xcode will detect that there are no eligible profiles on your local system and request a new one during the next build to a device. The new profile will be compliance with iOS 15 provisioning.
NOTE: if it still doesn't work, then install the iOS 15.2 beta release (Build 19C5026i or later) on your device and try the steps above again.

Answer 3

Indeed, it looks like, the problem occurs only with IOS >hardware< real devices running >= iOS 15
I see no option in Settings allowing me to set the app dev as trusted.
This does NOT occur with my older (real) iPad Air, running with iOS 12.5. The app runs immediately without prompting for trust etc.
It also runs without problems on Xcode's simulator devices with iOS 15.
So yes, I think it is an iOS 15 and/or Xcode issue.
reported this to Apple.

Answer 4

Ios15 changes trusted application position to:
settings -> general -> vpn and device manage
then you can see your application under the Developer App, click it and verify it

Answer 5

iOS 13
in your iphone,got to
Settings -> General -> VPN and device management -> Developer app ->Trust and accept

Answer 6

At least my issue was the result of Apple again messing with the code signing creating a ling tail of side effects.
iOS15 code signs differentially on the "new" type of certificates.
I'm developing an app that is connection to a device via WIFI without internet connection.
The initial development was done on Xcode 13.1 and an iOS14 iPad. That worked well. As usual the iPad needed to be on a WIFI with internet connection at the first launch to verify the code signing. After that it was fine to launch the app from Xcode to the iPad while it being on the WIFI without internet connection. The app didn't need any additional code signing verification.
After updating the iPad to iOS15 every launch started to fail with the error unverified when the iPad was on WIFI without internet connection. Launching on the iPAD on WIFI with internet connection was fine.
It seems like iOS15 causes apps to verify code signing on every launch - not only the first any more.
After searching and fiddling with Provisioning Profiles for several days I found out that Apple now has two different types of certificates - an "iOS Development" certificate and a "Apple development" certificate. The latter being the "new" thing.
Deleting my automatically created certificate and creating a "new" - and then a new provisioning profile solved my problems.
My app now only needs to verify code signing at the first launch.
This fixed my code signing / developer verification issues.

Answer 7

iOS 15:
Settings -> General -> VPN and device manage -> business apps -> Tap on your certificate and install it.

Answer 8

Might be a bit late, but to anyone still searching for a solution to this problem, I finally fixed it by turning on automatic date & time settings.
On your iPhone: go to Settings  > General > Date & Time.
Then turn off and on again the "Set Automatically" setting.
For somme absurd and unknown reason that seemed to solve the problem, for me at least.
Hope it helps.
Note: I have an iPhone 7 with iOS 15.6 and i use xCode 13.4.1

Answer 9

Just install the Developer app on the physical host iOS device.
Go to account and signin from you developer apple id
Now under Settings > General > VPN & Device Management you'll be able to see organisations.
Trust the ones you want to
You'll now be able to open the applications signed by that organisation