A connection could not be established

I use a work pc to connect to my home pc.  Yesterday I made sure TV was running on the new home pc.  I get to work, and I get the dreaded connection could not be established, tv is not running on partner computer.  

I get home-check the pc-sure enough TV is running.  I used my laptop to connect to my desktop at home-not a problem.  I get back into work this morning-still not able to connect.  What gives?