I have the radio plugged directly into the PC via ethernet. Its the exact same setup that's been working in the past. My radio was registered through SmartSDR, current firmware, etc.
I've tried uninstalling and re-installing SmartSDR, turning off all antivirus/firewalls, restarting computer and radio multiple times, and even uninstalling some of the latest Windows software updates in case they were at fault. But I still get this error. My radio appears in the initial SmartSDR selection window, and it's marked as "Available". When I hover over it I get the Serial #, IP address, etc. I can log in to my account fine. But when I click "Connect", I get the error message above. Same results when hitting the "connect" button in the DAX/CAT windows. I just can't connect no matter what I do. This is the exact same setup that was working fine a couple weeks ago.
Any suggestions or advice?