Windows 10: Windows home network

I have a windows home network with some PCs running Windows 10, Windows 7 and Windows XP.
Initially all of them were working fine, but at some point (I guess after some Windows 10 update) from Windows 10 PCs I cannot connect to Windows XP PCs using the computer name. I have to use the IP address. If I try to connect to a shared folder from Windows 10 to Windows XP using computer name, Windows Security asks to enter network credentials (user name and password). When I do so, it reports "The user name or password is incorrect".
If I use the IP address instead, everything goes smoothly.
Besides, I cannot print from Windows XP machine to a shared printer physically connected to a Windows 10 machine.

:)

 

Home can access all other computers, but when I go to access "Home" it asks for password and says wrong password

Original Title: Network problems

All computers are Windows 10 4 total

All computers show up on network

I can access all computer except Home (Windows 10 Home server)

Home can access all other computers, but when I go to access "Home" it asks for password and says wrong password.

The other strange thing is when I go to Network and sharing center, View your active Networks

2 computers show Zapster network

1 computer shows Network 2

Home computer shows Network

Should they all be on the same active "network"?

 

home network with windows home and pro

Thanks, but I decided to spend a little more to get a computer locally which has Win 10 Pro installed on it.