Dude, Where's Your Homegroup (Missing after updates)

So my main PC is Windows 10 Home V1803, Build 17134.1 and the other (which is usually the same but hasn't caught up yet to the Insider Build) is currently at Windows 10 Home V1803, Build 17133.73.

The two of them used to be networked without issue via Homegroup until my main PC updated last week. At that time, on the Main PC File Explorer in the Navigation Pane under NETWORK where Homegroup used to be, was just blank space (no more Homegroup). Tried several things to find it and finally got irritated and gave up.

During that time, the Media PC had NOT yet updated and Homegroup was still an option in File Explorer though the Main PC no longer showed as available.

Today the Media PC updated and now it no longer has a HOMEGROUP option either.

I am unable to circumvent the problem via legacy networking techniques so far, including the failed attempts to map network drives between the two. I've even gone into properties on a few folders and essentially removed all security making EVERYONE get full control. In Network & Sharing I've removed as much security as I can from all three types of network manifestations as well as allowing all unrestricted access to media streaming on any network.

And still...I gots nuttin but this headache and an empty vodka bottle.

Anyone??

This is so frustrating! After countless hours I was finally able to share files between my home computers with Homegroup. Now only a few months later Homegroup is gone and my sharing network is gone! Absolutely so furious

I never understood what Home Group was for.
I've had several computers in the house for years ... and I was able to file-share without ever using Home Group.