Help me reestablish the visibility of a shared Windows 10 drive to a Kunbuntu 14.04 computer on the local home network

I recently moved, but in my former home, I had set up a local network in which one of the drives of a Windows 10 machine was shared over my local network with an iMac and a Kubuntu machine. I’m afraid I’ve forgotten exactly what I did to enable all this, but I’m pretty sure I’m sharing the drive via SMB. The iMac accesses the shared drive through the Finder, and the Kubuntu machine used to access a particular folder on the drive through this command: sudo mount //WINDOWS-MAIN/DATA/Stuff/neuralart -t cifs -o uid=1000,gid=1000,username=Freeman /mnt/neuralart So then I moved, and when I set up the computers at my new place, the Kubuntu machine suddenly wasn’t seeing the shared drive any more. In fact, this command, nmblookup -S ‘*’ doesn’t even list the Windows machine any more. (But it does still see my iMac.) Meanwhile, my iMac is still seeing the shared Windows machine drive just fine, and I can still open Finder on any folder on the drive. What happened? Here are the only differences I can think of: 1. All three computers used to be connected to the same ethernet hub. Now, it’s just the Kubuntu machine and the Windows machine. (So that aspect for them hasn’t changed.) The only difference is that the iMac is now on the wifi. 2. The ethernet hub is the same physical device it used to be, but of course it’s now getting its Internet access from a different source, since I’ve moved. 3. The Windows machine received some automatic Windows updates between when I packed everything up and when I set everything up again at my new place. And that’s all I can think of. I’d ideally like to pay someone hourly to talk me to through investigating and fixing this, as I’d l like to learn a little more about the in’s and out’s of the situation, what I did right and what I did wrong, and I might have some additional security questions at the end. Let me know if you’d be interested in this, and we can set up a time. My hope is that this will only require an hour or two of your time. Thanks.