Cannot connect to Docker Hub

I am having trouble connecting to Docker Hub from work. I am running on Windows 10, I have started Docker Desktop as admin, and I have started PowerShell as admin. I have a http proxy file in my directory where I’m trying to pull an image that has my company’s proxysrv defined. But I’m getting the following:

C:\Windows\system32\Docker> docker pull hello-world
Using default tag: latest
Error response from daemon: Get dial tcp: lookup on no such host

What do I need to do to fix this?