Use /gd to delete a server-level group.
To use the /gd command, you must be a member of the Team Foundation Administrators security group. For more information, see Team Foundation Server Permissions.
Even if you are logged on with administrative credentials, you must open an elevated Command Prompt to perform this function on a server that is running Windows Server 2008. To open an elevated Command Prompt, click Start, right-click Command Prompt, and click Run as Administrator. For more information, see the Microsoft Web site.
Specifies the group identity. For more information about valid identity specifiers, see TFSSecurity Command-Line Utility Commands.
Required. Specifies the name of the application-tier server.
The following example deletes a group identified by "S-1-5-21-2127521184-1604012920-1887927527-588340", the security identifier (SID). For more information about finding the SID of a group, see /im Command. You can also use the friendly name to delete a group.
>TFSSecurity /gd S-1-5-21-2127521184-1604012920-1887927527-588340 /server:MyATServer