I've developed a Windows Store app, that works great on my Dev machine (Win 8.1 Pro; VS 2013 Community Update 4)
I try to connect over my network to my Windows 8.1 tablet (Not pro, Dell Venue 8"). I can see both devices on the network. My Dev box can see shares on the tablet, and the tablet can see shares on the Dev box.
When I try to run remote debugging, it asks for authentication. I am logged in on both machines (which I believe are on the same homegroup/workgroup) with the same Username/password, but it still asks for authentication, and tries to use my Dev PC's name as the domain.
What am I missing? Since the tablet is not Pro, I do not have the local security policy editor.
Did you try setting the options on the Remote Debugger to "No Authentication"? Note, this could be a security problem so do so at your own risk.