i need a search filter to display users of a specific group.

i've tried the following:

(&(objectCategory=user)(memberOf=SingleSignOn))

and this:

(&(objectCategory=user)(memberOf=cn=SingleSignOn,ou=Groups,dc=tis,dc=eg,dc=ddd,D*​C=com))

but got nothing, please help me correct it.

I am using the advanced "Filter" within AD to test.

both of these return 0 results. please help!