I have two domains with a one-way trust. I have a common PKI setup in both domains.
When I map a drive letter to a share and select "connect using different credentials" and enter my username/password for the remote domain, I am able to authenticate to the remote domain with no problems. The remote user gets authenticated and the drive is mapped.
When I attempt to map a drive letter to a share and select "connect using different credentials" then select the "smart card" option and then enter my PIN and Username Hint for the remote domain, my localdomain/localusername combination is sent.
Is this behavior of always sending your local domain\username "by design"? Is there any registry keys (or GPO's) that would affect this behavior other than "allow user name hint", which is already enabled everywhere?