On January 2018, conditional access policies for Intune will be moved for good to Azure AD.
Until now (and January 2018), conditional access configuration is/was available through the ‘classic’ Silverlight Intune portal, Intune App Protection (MAM) blade and classic Azure AD portal.
If you have policies configured on any of these previous access point, you need to review them and start configuring these policies using the new Azure AD portal.
Enjoy the new experience