Local network file share not working

I have 4 Ubuntu desktops. 3 of them run 14.04. This is my first 16.04 Mate install. I can see the shared folders on all machines. However, When I try to open the shared folder on this computer from my 14.04 computer it will not accept the password. Any help would be appreciated.
Well, I did updates on my Ubuntu Mate 16.04.02. Now I am no longer able to see the network at all. The computers on my network used to show up under network and under windows network. Now, they ar not in either place. When I click on windows network I get the following message. (Failed to retrieve share list from server: No such file or directory) I tried reinstalling Samba and comparing Samba settings Between the 3 Machines to no avail. The two Ubuntu 14.04 machines still work fine.