Can't see shared folders in the Navigation Pane in File Explorer on ei

I have two HP laptops, both running 20H2 with the latest updates. A problem that existed before the upgrade did not go away after the upgrade like I thought it would.

Both machines are networked through an ethernet switch to the router and to a printer. I have shared folders on both laptops, and printer sharing is also turned on. When I first turned on sharing, all my shared folders appeared in the File Explorer navigation pane under the Network on both machines, and also in the main pane when I opened the network folder. Sporadically they would stop appearing on either of the machines, sometimes on one, sometimes on the other, sometimes on both. I haven't seen the shared folders in the Navigation Pane for several months now. I was wise enough to map the shared folders as drives on the appropriate machines, so I know my network is good- I can access everything through the mapped drives in My Computer on both machines, and the mapped drives appear in the Navigation Pane on both. i have no problems reading or writing to anything. I have no trouble printing from either machine- basically the network runs just fine. In the opened network view, the two laptops appear as media servers only- the laptops themselves do not appear like they used to.

It's more of an annoyance than anything- it doesn't affect functionality at all, but it just irritates me that what used to work now no longer does. It appears to me that this is just a problem in File Explorer itself. I tried a half dozen or so File Explorer replacements, and they all do the same thing.

Any suggestions?

I gave it a try. I'm afraid it didn't help. Thanks for the suggestion- it was worth a try.

Actually I have made some progress. I did another in-place upgrade on both machines, which didn't help. I then found an article on Pureinfotech entitled How to fix network discovery on Windows 10, which gave about 5 different methods to try with a number of items to check. I verified all my advanced sharing features were correct on both laptops (they were), made sure that all required services were running on automatic on both laptops (they were), enabled the legacy SMB protocol on both laptops (BINGO- this totally fixed the problem on my 15-da0053wm. Unfortunately, this fix didn't help on the 15-bs234wm). I ran the network troubleshooter on the problem laptop- this told me I had internet connectivity problems, which was incorrect- my internet connectivity is fine. I then reset the network adapters on this laptop, but that didn't help either. So now I have one of the two now fully OK, but not the other one.