SEPM Clients not getting Virus Def from Manager

I'm having a problem getting my SEPM Clients to grab the latest Virus Def from Manager, and the clients aren't even grabbing it from Symantec like it was setup to do. This started right after I upgraded from 12.1.4023.4080 to 12.1.5. I've been using 12.1.4023.4080 from Feb 2014-2015. All the online clients are reporting the current date in the "last time status changed" column aka Mar 17th, they all have a green dot but with a vius def date ranging from feb 19 to Mar 16, depending on the machine. 

Server 2008 R2, Clients on Windows 7 SP1

Any ideas on what I can do to fix it? 

Thanks