not displaying group name

ETC Microsoft Windows
1

I created a directory test. But it is not displaying the group name. Windows 2003R2 machine.

drwxr-xr-x  1 vivek  0   0 Sep  2 12:39 test
 
uid=1073778986(vivek) gid=1073742337(+Domain Users) groups=1073742337(+Domain Users), 65792(+Everyone), 131616(+Administrators), 4095(CurrentSession), 66048(+LOCAL), 66820(+INTERACTIVE), 66827(+Authenticated Users)
2

cygwin?

It looks like the group is zero (0) == root.

In order to be seen as text the group has to exist in /etc/group Try groupadd