Hi [NAME]-Chris M , Thanks for responding. Fortunately, someone from the [NAME]-Cares team contacted me via PM and took my details including the fact I am on the latest firmware for my WD19TB. They confirmed with engineering that the issue lies with a compatibility issue with Windows 10 21H1 and suggested I revert back to the previous version of the driver as mentioned 2.45.2020.0601, A20. Now, it would be great if Dell could update the details about the 2.45.2021.0825, A23 driver to warn people of this issue.    
Hi, I just installed this dock driver on my XPS 9380 with my WD19TB dock and the Ethernet card stopped detecting a link with an Ethernet cable attached. My machine is running Windows 10.0.19043.1202 Realtek USB GBE Ethernet Controller Driver 2.45.2021.0825, A23 <ADMIN NOTE: Broken link has been removed from this post by Dell> I had to downgrade the driver back to 2.45.2020.0601, A20 and then everything worked again. Anyone else having issues?
XPS 9380, WD19TB, driver broke dock Ethernet connection