As you may know, Homegroup was removed from Windows 10 and the new Network tab replaced it. It is essentially the same thing, you can share files between different PCs across your network. I use this tool a lot when sharing files between PCs and it is very useful, whilst working.

If you have suddenly had your network tab stop showing certain PCs on your network consider this fix

1. In the ⊞Windows Menu, search for Services & open it.

2. Find Function Discovery Provider Host and double click to open.

3. Click Stop if already running.

4. Click the Startup Type dropdown dialog and change it to Automatic (Delayed Start).

5. Click Apply, then Start & finally Ok.

6. Repeat the process from steps 3-5 on the service Function Discovery Resource Publication.