@Ryan Pennington unfortunately the tips listed do not work despite client side versions being correct. I know as I have two tickets open right now that are as of yet not resolved. It'll get sorted out I'm sure.
Howdy @Overlord - After I posted this I realized I may have indeed utilized the wrong PORT # and indeed it appears I was. Now, granted I am at work so at the moment can't confirm whether or not this was my issue but will know by this evening. If indeed this is the issue, it was a silly error on my part and a result of not paying attention.
This is happening to me as well. Just purchased a server yesterday. Connect to the IP, PW prompt comes up, tries connecting then DCs. Happens to my son as well on a different machine.