I am unable to access my IIS website or even the default website. I did a bit of research and checked/selected the option 'Integrate Windows Authentication' in the Properties > Directory Service tab.

From then on I could access the website using localhost. But when I use my hostname, it asks for domain username/password. Why is it so?

I don't understand why am I not able to access my website without checking this option to integrate windows authentication?

My goal is to access the website using both localhost and hostname.

More details on what I did:

I haven't done anything out of world. What I did is: IIS -> Websites -> Create new Website -> Create a working folder -> Set a default page. I restart this website and then click on browse. And I do not see my default page. I had to go to Directory Service tab and select the check box "Integrate Windows Authentication". Then I can see the default page coming. On IE too I can see the default page coming when I use http://localhost. But when I use http://{hostname} it asks for domain username and password. Why???