Adprep did not attempt to add Anonymous Logon SID to Pre-Windows 2000 Compatible Access group because Everyone is not a member ...

Adprep did not attempt to add Anonymous Logon SID to Pre-Windows 2000 Compatible Access group because Everyone is not a member of this group.
[Status/Consequence]
For backward compatibility, Adprep requires that the Anonymous Logon security group be a member of the pre-Windows 2000 Compatible Access security group if the Everyone group is also a member. Since the group Everyone is not a member, Adprep continues.