If the group login is granted access to SQL then you can useexec xp_logininfo 'MYDOMAIN\MYGROUP','members'
If not then you can create a procedure to do this. Please note that this is not really supported as it marks the procedure as a system objectUSE MasterGOEXEC sp_configure 'allow updates', 1RECONFIGURE WITH OVERRIDEGOEXEC sp_ms_upd_sysobj_category 1GOCREATE PROC xp_GetNTGroupMembers@acctname sysname --IN: NT group nameASSELECT NameFROM OPENROWSET(NetGroupGetMembers, @acctname) AS NTGOEXEC sp_ms_upd_sysobj_category 2GOEXEC sp_configure 'allow updates', 0RECONFIGURE WITH OVERRIDEGO