Like everyone else we received the notification from Duo Support that we had 'something' that would fail because it wasn't TLS 1.2. They were unhelpful in they couldn't tell us what that was. Now we're receiving a slow moving error logging in on all our workstations. It's usually 1-2 everyday. We simply tell them to click Switch User and log on as normal. I just don't know what's causing the error: Invalid TLS version in request connection [40304]
We only use Duo Authentication for Windows Logon x64, .v 4.2.0.1263 and v. 4.2.2.1755. These are all windows workstations running the latest version of Windows 10. They all connect back to the Duo mothership.
I have no idea what could be causing the error.