Windows does not permit user and group accounts to have the same name. This has serious implications for all sites that use private group accounts. A private group account is an administrative practice whereby users are each given their own group account. Red Hat Linux, as well as several free distributions of Linux, by default create private groups.

When mapping a UNIX/Linux group to a Windows group account, all conflict can be avoided by assuring that the Windows domain group name does not overlap with any user account name.