There are reports that if you have multiple network adapters configured on the VDA machines, it may interfere with the secure communication between the VDA and controller servers, causing the registration to fail.

It's recommended to have only a single network adapter configured on all the VDA machines that require registration with the Controller servers.

To troubleshoot issues where multiple network adapters are configured on the VDA host machines, it is recommended to disable the additional adapter and run the VDA registration test.