Please keep it disconnected until prompted. Given that the problem coincided with a Windows Update, our first step is to ensure that the Intel Thunderbolt Software that controls this process is in a good state by reinstalling the latest version provided by Dell and then re-authenticating the dock. While video outputs will always function regardless of authentication status, the USB ports, Ethernet port and audio port will not work if they are not properly authenticated.
To expand further, a Thunderbolt 3 dock must be authenticated or ‘approved’ before certain elements will function. 'Based on your description, it sounds like there may be an authentication issue happening. I have included an edited snippet of the relevant information for resolution below. For the benefit of anyone else following this thread, Rachel also reached out to us directly via and the issue has been resolved.
