While you can access network resources on a work network or a domain, you cannot join a XP Media Center Edition 2005 PC to the domain. PCs running XP Media Center Edition 2005 are designed specifically for home use. XP Professional features, specifically Domain Join and Cached Credentials (Credentials Manager for logons) are not included.

As a result, you will be prompted for your logon user name and password to access network resources after you reboot or log back on to the PC. In addition, file shares or network resources that are set to require a domain-joined PC for access will not be available. Remote Desktop and Encrypting File System support are still included.

In addition, Media Center Extender devices require concurrent connections, and these connections are available only through the Fast User Switching component. Therefore, the domain join functionality in XP Media Center Edition 2005 is disabled.