This should be a good one. No mobile phone can sign into Lync 2013. No Android, iPhone or iOS. There is no error code they just stay stuck at the signing in screen. Here is where it gets fun. Everything else works. Mac's, PC's, Tablets, iPads and everything in between, only mobile phones do not work now. I re-keyed wildcard cert and installed on the correct servers. Everything works including AD searches in Skype for Business Clients and Power Point presentations during a meeting.
I have an onsight premises Lync 2013 server setup. Lync 2013 Front End Server, and Edge server, a Web Apps Server, a ADFS server and a Office Web Apps server. All servers are on 2012 R2 I was on the phone with Microsoft (ugh) and they still can't figure it out. Do I have anyone out there that had this same issue?