In 2018many devices like printer, tablet, PCs, laptops are connected to your modem/router combination.
They are visible underNetwork in File Explorer in Windows 10.
Thebest solutioncan be got by using this suggestion.PressWin+Rkey and enterservicees.msc.
Open it and scroll down to find the following services.
Function Discovery Provider Host2.
Function Discovery Resource Publication.
Set them toAutomatic (delayed start).
Then start both the services.
Now reboot all the machines and check whether they are all acting properly or not.
This should likelyfix the problem in Windows 10 1803 version.
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How To verify if all the Devices are Connected to your Modem/Router Configuration?
In any one of the PC or laptop, ping the router IP or name.
Windows 10 will see it as a new internet, if therouter or modem has changed.
Sometimes the web link might have been set to Public by the new router.
It also takes some time to see the new online grid.
Fix #1.First you better check all the devices NICs are private or not.
Generally, Windows 10 likes to change them to Public online grid for unknown reason.
Fix #2.Check whether your system, gadget is set to visible on the Private or Home internet.
For this it’s possible for you to do the following.
Navigate to the following item Control Panel > All Control Panel Items > web connection and Sharing Center.2.
Under this press Change Advanced Sharing Options.3.
On the next window, you have Home and Public connection options.
Here you could unlock the following options.1.
Turn on connection discovery.2.
In theControl Panel > Programs and Features, there is an option called Turn Windows features on or off.
When you open it, there is a provision to setSMB prefs to SMB1.
You also need to enable remote connections on the current PC to make your computers visible on the connection.
Now you’re gonna wanna wait for somtime and ping the machines.
you might also connect all your devices to a switch and then connect to your router.
Once can also give a shot to disable Router firewall, if that option is provided in the parameters.
Source : https://www.tenforums.com/online grid-sharing/109166-computers-not-showing-up-under-online grid-files-explorer-2.html