I looked into this on more than a few posts and shook my head as I read https://community.linksys.com/t5/Wireless-Routers/WRT1900ac-Defects-Issues-and-Other/td-p/855512/page/2
There is no short answer here. Not only do you have to work the name issue but the changes Microsoft made to secure the network add a lot of steps. THERE IS NO ONE STOP SHOPPING to set it up as there are so many choices to be made.
-> About non-warranty support for free. Companies pay employees so without revenue how to pay them? This can cause folk that want free support to detonate. I've seen it too many times.
I don't mind sharing thoughts on this but I didn't find a step by step for your issue. Just a lot of steps and then they change with each person's selection of network names and OSes.
What a mess. Set it off like the bomb?
I've been trying to find a way to change the NETBIOS name "WORKGROUP" the firmware/software on my router apparently broadcasts to the one my Windows XP and Windows 7 workgroup clients use. Any suggestions?
Linksys support forums apparently don't work any more because of some bozo webmaster from Belikin who is managing to lock existing customers out of the forums by not allowing posting, or any kind of password access to the old forums, and not providing non warranty customer support for free... I hope I'm wrong, but this has been my experience recently. since they started "upgrading" the way CNET appears to be doing also...