The are on the same network, via Ethernet but not the same switch; both switches are connected to my router.
Incognito mode has no different result. Click Connect and it bounces right back to the Connect screen.
The other switch shouldn’t matter. However it is another complication. If there is a duplex issue between your switches, you may lose enough packets to make whatever protocol the Tablo uses fail. If the second switch has a buffer problem, it may be enough to break the Tablo. If you can move your non-working device to where the working device is, or vise-versa, then we will know if the issue is the Mac or the network.
On the non-working Mac, you may want to “Clear Browsing Data” in Chrome to see if it’s just a bad cache entry. I’ve had that problem several times.
I’m having issues with my Mac not connecting today. My android device wouldn’t find the Tablo on the local LAN until I uninstalled the app and re-installed. I’m still looking for what is causing my Mac issue. Wireless and wired have both failed for me today after clearing the browsing data each time. I sure wish the my.tablotv.com web app wasn’t in the middle obfuscating things and I could simply connect to the web server in the Tablo. It would make troubleshooting more straightforward. The my.tablotv.com app at least needs troubleshooting tools so you can see where the breakdown occurs.