@retrodude78 Besides enabling SMB is important to have your network as public/private set correctly and allowing nearby devices to find you. (You can also follow these instructions: https://github.com/recalbox/recalbox-os/wiki/Windows-10---cannot-access-Recalbox-from-network-share ) ... those were not enough to solve my problems by themselves. But you can try though, Once your SMB is correct.
First thing I would do if I were you would be to switch (if possible) between WiFi and Cabled Ethernet connections (worked better for me when I was using WiFi for instance). And would insert manually my WiFi password again. > On your Recalbox menu try to enable/disable(go back to menu)/Enable again your WiFi at Network connections.
If nothing of this work you can see if another PC connected to your network is able to access your device: if it is the problem is with your PC configuration - otherwise can be with your PI.