I wanted to try the latest SE iOS app beta on iOS 9 (13A4325c).

After downloading v via mobile safari, this modal dialog casts shade upon stack developers:

Untrusted Enterprise Developer

Have I missed a certificate to install?


1 Answer 1


This is a new iOS 9 security feature. Enterprise signed apps that are not installed through MDM have a manual approval step required before the OS will launch the SE app that's signed for enterprise distribution instead of App Store distribution.

As proposed by the dialog, trust StackExchange to be a legit and trusted app provider.

  • Open your Settings
  • Go to General
  • Go to Profiles, which can be found at the bottom of the page
  • Tap on 'StackExchange Inc.'
  • Tap on the Trust button

When the profile is selected:

profile selected

Trusting the app:

trust dialog

  • Yes - I was looking for the documentation on how this works - apparently the bugs in iOS 8 betas were causing this dialog to not be a) documented b) clear c) work for some people across builds of iOS.
    – bmike
    Sep 8, 2015 at 13:54
  • I figured that with iOS8 it was too just easy to trust an enterprise app. Making you go 5 screens deep without instructions will give you more time to question if it's a good idea. Sep 10, 2015 at 21:22
  • For some unknown reasons, I don't have to trust it to install the app. The iPad has trusted it itself.
    – Ooker
    Oct 2, 2015 at 5:35
  • Have noticed that once too. Seems to be a specific situation and I am not sure why it happened either. @ooker Oct 2, 2015 at 5:38
  • Maybe because I have it installed when it was iOS 8, not install it new in iOS 9?
    – Ooker
    Oct 2, 2015 at 5:45

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