AD authentication looks to work with 10.1 however it seems that if the client machine you are running Atlas on is not a member of the domain and you use <DOMAIN>\<USER> or <USER>@<DOMAIN> there is not even an attempt to access the Webserver and you get an immediate error "Server is not reachable"
If a local Orion account is used and only a <USER> is specified in the Atlas login then everything is fine.
This has been tested on multiple machines that are not members of the domain with the same results. Is this a bug? Is it a requirement of Atlas that the client be a member of the domain?
Thanks!