I have a home network with the following configuration:
A Windows 10 Desktop with Version 1809 (id DESKTOP-ANLITMR)
An old iMac with version OS X 10.6.8 (id BRIANSCOMPUTER)
A MacBook Air with OS Mojave 10.14.6 (id MACBOOKAIR-8E1E)
A Canon iP7200 wireless printer
An HP Envy 5055 wireless printer, scanner, copier
I am able to share all of these on my home network as shown in the network tree screen capture attached. At various times the Mac computers disappear from the network tree as illustrated in the other screen capture where only the Windows PC appears. I can however ping the Macs so I know they are still on the network. This seems to happen without me having made any changes on the network and I am at a loss as to how to correct this.
Any help in solving this would be greatly appreciated,