Authentication failed when using invitation code

I installed Docker for Windows and when I submit the invitation code I get the below error. I am using Windows 10 laptop behind company proxy. Any suggestions?

Your laptop can’t reached https://validate.docker.com/. Since you are behind the company proxy, you will need to check with your Network Admin to make sure the DNS is working correctly.

As an alternative to @fauzanariffin’s suggestion, if you’re on a laptop, you may also try to activate Docker from a freer network.

Thank you. I will try registering from home network since no change can be performed in my company DNS.