Here comes the solution of the vxdiag benz C6 (as well as vcx se benz) connection errors.
vx manager can see my device, but the device icon remains unconnected.
Others can solve it by installing the 2021.03 driver. but it still shows error ‘Connect error CAT cannot open caesar.cfg file when trying to install 2021.03 C6 driver.
Delete and reinstall vx manager, still reported ‘Connect device error: ping failed’
WiFi connection no luck either.
Uninstall VX and vci manager totally
Then install old VX manager version inclusive Daimler Driver
Then reset the vcx se
After this updated the VX manager to new version but without Daimler Driver.
The approach is indeed a method that can be referenced.
Contact our customer service if still not working.