The first question is, whether or not the problem is reaching the server or the share.
For the server, try to connect to the server, so in your case \\192.168.2.92
Please note, that depending on the installation time, Windows version and settings on the machine, you will have to use Backslash. Thus, the slashes in your run box screenshot might be part of the problem.
If you can connect to the server, check, whether there is a firewall in between the client and server. Can you open the UMC from your client http://192.168.2.92 ? The second question, check whether samba is running on the server. In the management console, go to System -> System Services and search for Samba 4.
If you can reach the server, but do not see the share, then the problem is in the share itself. My first guess would be, that the underscore is producing issues. Try to rename the Windows Name to something without the underscore.