heroku container:login ERROR !

[refactormyself]

I am trying out the container registry following the getting started tutorial here - https://devcenter.heroku.com/articles/container-registry-and-runtime

heroku container:login gives error, it seems to be looking for the docker registry on localhost instead of registry.heroku.com (I guess). See snap shot :

I have also tried to use docker to login to the registry with my heroku account detail also no luck.
I am using a windows 8.1 machine and it is the same result on cmd

[dmathieu]

Hey there,

This looks like a corporate firewall blocking port 2375. Could you try logging from another connection?