Networked Macs not showing in Finder sidebar

[valiant66]

This has me quite baffled.

I have two Macs running Mojave and one running Yosemite on my local network.

The MacBook running Mojave can see the other two Macs in the Finder sidebar - the networked Mac show up under the Locations area.

The old MacPro running Yosemite can see the iMac running Mojave (and my Volumio Raspberry Pi too) but not the laptop - they show up under the Shared area.

But the iMac running Mojave sees nothing on the network. And using Cmd-K in the Finder doesn't work either. I've got a couple of old smb bookmarks to the Yosemite MacPro, but when I use them they never succeed in connecting.

I've deleted:

~/Library/Preferences/com.apple.finder.plist
~/Library/Preferences/com.apple.locationmenu.plist
/Library/Preferences/com.apple.networkextension.necp.plist
/Library/Preferences/com.apple.networkextension.plist
/Library/Preferences/com.apple.networkextension.uuidcache.plist

And rebooted lots of times.

I've also turned off and back on again the appropriate Finder preferences to show mounted volumes in the sidebar in both the General and Sidebar tabs of the Finder prefs. The only sub areas in the sidebar are Favourites, iCloud, Locations and Tags.

I have a couple of backup targets on the Yosemite machine, but unless I can mount them, I can't back up to them so I'd like to get this fixed.

Any ideas what else I can try?

Thanks.

EDIT: OK, this is extra bonus weird. I changed user to another admin account on the same iMac, and that account CAN see the Yosemite MacPro. It's only my primary user account that can't. This has me super confused.

 

[Taz Mangus]

EDIT: OK, this is extra bonus weird. I changed user to another admin account on the same iMac, and that account CAN see the Yosemite MacPro. It's only my primary user account that can't. This has me super confused.

Take a look at what you are starting in the Login Items for your user account, remove them. Also remove the entries from your user account Library/LaunchAgents folder. Restart and log back in to your account.
If the issue goes away then you know it is related to one of those things.

 

[Tech198]

Turn off Firewall on all Macs (if on) and try from the original account too see if it's a firewall issue. (ie perhaps blocked some connections?) Then turn one firewall on at a time, and test.