Hey,

I purchased a TB3/USB Type-C to HDMI female adapter to connect my UHD TV to my Dell XPS 15 9570. When I connect it to my XPS 15-9570, I get a notification that "Display connection might be limited" for Display Port Alt Mode. (For some reason not HDMI Alt mode?)

I made sure this cable is working on another Thunderbolt 3 Lenovo machine and it did work.

I tried :

• Clean install
• Installed all drivers
• Update Thunderbolt 3 firmware
• Remove drivers and install again
• Change Thunderbolt Bios Setting to No Security

Also for some reason in the Thunderbolt 3 app, my Thunderbolt controller driver is unknown, and when I check my device manager I see USB 3.1 eXtensible Host Controller 1.10 (Microsoft) and can't see any Thunderbolt related driver (not in System devices too)

I am quite sure this is a software problem because the port is working and Windows recognizes when I insert any Type-C into the port. 

Any help is really appreciated,

Thanks!

Adir