The MessageStats installer automatically creates roles and permissions. For all MessageStats Reports servers housing the MessageStats Reports web server:
On the MessageStats Reports virtual directory, ensure that Integrated Windows Authentication is selected.
At a minimum, the user accessing the site must be in the WebReport Users local group to view the site. The user can also be present in the Web Report Administrators and Web Report Authors local groups, keeping your security hierarchy in consideration.
On the computer hosting the MessageStats database, ensure that the user accessing the site is in the MessageStats Admin local group (for read and write access) or MessageStats Web local group (for read access only).