I have setup a FTP site in iis on my 2008 r2 server.
The ftp works fine with permission, I use Anonymous Authentication with an account specified. Basic Authentication is also activated with a domain specified.
For this ftp site I have added a http via bindings.
When I try to browse to that site I got 403 - Forbidden: Access is denied.
I found this site that describe this problem but I can't find any 'ISS_IUSRS'..
http://sanuja.com/blog/resolving-iis-403-forbidden-access-is-denied