How to fix "Untrusted enterprise developer" certificate issue on iOS 9 ?

Devops

On devices with the new iOS 9 version, an error message appeared when testing apps built with entreprise developer certificate : "Untrusted entreprise developer".

 

untrusted-ios9.png

 

To fix this, go to Setting > General > Profiles and Devices Management. Then click on the entreprise name, a popup will appear asking you to trust or not this certificate.