Aug 01, 2017 04:10 PM|bbcompent1|LINK
In my experience, you are probably coming face to face with Kerberos. In the server configuration, you must enable NTLMv2. iOS and Apple in general do not play nicely with Kerberos but it can respond to a login using username & password. Enabling NTLMv2
will give you that user login prompt that iOS is looking for.