Super frustrated with Windows 10 - Home Networking!!

I've been running up against problems with Windows networking most of my adult life (I'm 40), but this is another level of strange. I will cut right to the chase. I have a home network with a one word workgroup, and all computers are a part of it. I have network discovery and file sharing turned on, on all of these computers. 2 of my 3 computers are able to share files with each other, a 3rd is not. I've gone over all the settings. I've enabled NetBIOS. My nic drivers are updated to latest and greatest. I plug in the IP address of my desktop followed by a D$, and I get prompted for username/password. I think, great!! now maybe we are in business!! No joy though. It won't take.

Here are some potentially important factors.

Number 1 - The computer I am trying to connect from is a laptop which is wireless, where-as my other computers that are working, are wired on the network. --- I had this same problem at a friends clinic a few months ago, with a printer that was set up wireless on the network. Windows 10 computers kept losing their connections to it. I would reset everything and rebuild it up from scratch. It would work for a week, and then I would get a call that it wasn't working again. I eventually fixed it by running a cable and setting the printer up on the network via Ethernet. --- However, there was still one machine at the clinic that was wireless, and try as I might, I could not get it to connect to this printer. They determined it wasn't really important, so we let that one go. Every other machine that was wired in, could print just fine. The wireless router here was a 300 dollar Asus, top of the line. I happen to have a high end Asus - RT-AC68U. Not the same router, but pretty close, which is why I mention it.

Number 2 - The username on my desktops is identical - It's my email address at Hotmail, along with my password. This is because Microsoft required it if I want to use the store, and at the end of the day I no longer have a problem using my email as my username, however unnatural that still might feel, provided it works.. My daughters laptop (the one that can't connect), uses her email address as username which is of course different than mine. When I connect direct to the IP of my desktop, and I plug in my email/password to access it, it doesn't take. I get "access denied" and it comes right back to prompt.

I will add, that I am actually really starting to like Windows 10, especially on my daughters new laptop. She has an Acer spin 7 which has a gorgeous touchscreen. I find myself really liking the way this thing works, and wishing I had a nice wireless windows 10 touchscreen laptop like this myself. Alas, the kids get all the good stuff, cuz they have to write important papers for school...


That's about it really. Any help greatly appreciated!!

The C$ administrative share has been deemed to be a security risk in the past few years and so Microsoft has in it's wisdom added restrictions to the access possibilities. This also applies to other root shares if you have them.

Try setting up your shares a level down and see if this improves matters basically C$ can be flaky to say the least but share C:\folder and it should work fine