This is a new install that has had update rollup 15 applied on the client side as well as the server side.
Environment is Windows Web Server 2008 R2 with SQL Server R2 2008. All updates have been applied thus far.
Client configuration is Windows 7 Ultimate Sp1 64bit , with Outlook 2010 32bit.
I have been able to auto authenticate and access the CRM site via IE 8 without any trouble in the domain login, via http://crm.mycompany.com:5555
When entering this same address into the configuration wizard, it appears to start configuration but then displays the following error Http Error 404: Not Found.