I ran into some similar issues, especially after Windows 10 moved into the Creator’s update and beyond and disabled the SMB1 and the whole NetBIOS thing. Even declaring Rockstor the Master Browser didn’t solve it.
My current SMB settings are like this:
so I have a workgroup and a netbios name defined …
In addition, I ended up installing a wsdd daemon (windows discovery service) since I still couldn’t see the SMB shares in my Windows Explorer …
Unfortunately, this was 2 years+ ago, so I don’t exactly know what I did, but I believe, I used this one:
GitHub - christgau/wsdd: A Web Service Discovery host daemon.
I don’t remember giving it extra options during the start, so it attached to all network interfaces, but since then I have been able to access my shares from Windows machines just typing the NetBIOS name into the search bar … since my “prod” server is still on CentOS I could install the package directly…
That solved the issue for me finally. Not sure, whether this will work for you or not … and since this was all based on various searches, there might be a much simpler approach to solve this … I’ll see what happens when moving to the Rockstor 4 version, as I have not tested it in that regard.