To reproduce the problem:
- Open the network page that has always been around in Windows, practically since the beginning of time. I call this the classic network page. This is the page that shows categories such as printers, multifunction devices, computers, other devices, and so on.
- You see that a certain printer which you know is on your network doesn't show up. You can prove to yourself that it's there by doing this: go into Windows settings. Under printers & scanners, you will see the printer, and you can even click on it, click "manage" and print a test page successfully.
- Now go back to the classic network page, and click on "view."
- Check the box next to "hidden items."
- You will now see the printer.
- You can apparently even uncheck the box now, and you'll still see the desired printers. I don't know how permanent this fix is, so maybe keep that box checked.
- Note: This view/hide must be a flaky toggle because sometimes I can't see the printer even when the box is checked, but all I have to do to fix it is uncheck, then check again. Go figure.