Recently,there are some ask for help that C4/C5 2020.03 Ewa-net Activation Unknown ID
Now the follow is the solution
How to sovle sdconnect c4 2020.03 SSD and sdconnect c4 2020.03 HDD enter ewa-net to activate, get error ” unknown id”. ?
Solution:
Enter the Device Manager, uninstall the hidden NIC driver, restart ewa-net. (If you have no idea which are the virtual network card drivers that need to be uninstalled, Find the ones with # to uninstall.
Check the images with steps: