Windows – IIS 7.5 – Authentication works with IP Adress but NOT with FQDN

authenticationiisinternet explorerntlmwindows

I'm using an IIS Server and run into the following problem:

Using Internet Explorer, I type http://1.2.3.4/mySite/ and everything works fine, it uses my Windows credentials. When I try http://name/mySite/ or http://name.domain.tld/mySite it does not work.

But what does not work?
I will be asked for my user credentials, but when I type them in and try to login it's going to prompt again and again.. Any quick ideas about what could be the configuration issue?

I already added the site to the local intranet sites.

Best Answer

ON the server, you want DisableStrictNameChecking and DisableLoopbackCheck registry keys

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\LanmanServer\Parameters

Add a new DWORD. The name is DisableStrictNameChecking, and the value should be set to 1

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa

Add a new DWORD The name is DisableLoopbackCheck, and the value should be set to 1

Restart after setting both.

Related Topic