Done. I'm attaching a screenshot of my page.
As you can see there is a difference between the variable displaying on the page and the variable that should filter my recordset.
The $_SERVER['REMOTE_USER'] variable displays correctly here: SSF\c890rbr
the recordset SQL is: SELECT * FROM users WHERE Username = 'SSF\\\\c890rbr'
So where do the 3 extra \\\ come from ?
Thanks again for looking into this.