Open network no longer works

Prior to W10 I had a network NOT using Homegroup. Network worked who needs it? Now, I see some of my devices on the network, but when I try to share files I get a window requesting user name and password. Never used passwords before. I think Homegroup is sneaking in there, but all the devices say they don't have a Homegroup but some of them say the see a Homegroup on other devices. I've disabled Homegroup on all devices tried changing advanced network settings to no avail. What is going on?

Right-click on the network icon and select Network and Sharing Center. Then click to open Advanced Sharing Settings. Scroll down to Password protected sharing and set it to Turn off password protected sharing. Click Save changes and then try to access the shared resources again. If you want to be able to access your pictures, music and videos from a compatible device such as a smart TV, you must enable Media streaming and check the box to allow the specific client access to the data. Of course your network must be set to home for full access from every other device. Work or Public do not work.