IIS 7 and Above
Not able to access site with hostname on 2008R2 Server
Last post Jun 06, 2012 03:54 AM by kctt
May 31, 2012 07:28 PM|sriharsha_v|LINK
Jun 02, 2012 04:12 PM|owjeff|LINK
You're likely running into this loopback check issue when browsing locally:
I would recommend disabling it via method #2 decribed in that KB article.
Jun 06, 2012 03:54 AM|kctt|LINK
When you say you give valid username/password, is it a windows user account?
Does the account have permission on website folder. Check login with administrator account.
In IIS manager you can configure application pool to use Network Service identity and add Network service permission on website home folder.