SharePoint: Getting prompted enter username and password when trying to get into the SSP area

1. Symptom –

–>You are trying to access your shared services page URL https://sharepoint.yash.com/ssp/admin, but it prompts for password trice and if the password is supplied for the system account you get IIS error

“HTTP Error 401.1 – Unauthorized: Access is denied due to invalid credentials.”

–>You are unable to get into the SharedServices1 site

 
2. Cause –

–>Security setting in Windows Server 2003
3. Resolution –

–>We went to registry

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa

–>Create a DWORD Key “DisableLoopbackCheck” and modified the value to 1

–>Performed IISRESET

–>Browsed the SharedServices site and it opened successfully
4. More Information –

You receive error 401.1 when you browse a Web site that uses Integrated Authentication and is hosted on IIS 5.1 or IIS 6

http://support.microsoft.com/kb/896861

Site not browse able with host header – 401.1 error

ISSUE DESCRIPTION
===================

>SharePoint site is browse able from the client machine with the host header.
>When browsing from the server, it prompts for credentials three times and then we get 401.1 Unauthorized error.
>On server, we can browse the SharePoint site with server name(In some cases even with server name, the site doesn’t come up)

RESOLUTION
===================

>Remove the security update KB963027 for Internet Explorer 7.0 and then reboot the server.
>If that didn’t work try with http://support.microsoft.com/kb/896861