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Allow Anonymous Authentication at website through IP Address or Computer Name

Dear All,
Today i resolved an issue which is very basis but the solution is little bit tricky. The problem was related to accessing the website on LAN through IP or the domain name by anonymous user.

I setup the site through IIS and run it on local host, the website runs perfectly. But when I tried to access the same website through IP Address  or Domain Name it's prompting the user name and password.

I do the following steps but i did not get any success 

1) Open the site property in IIS through website property and allow anonymous access
Result the website still ask me user name and password

2) Open the web.config and add the following code
        <allow users="*"/> //Allow everyone
Result the website still ask me user name and password

3)  I made the the directory permission on every one and IIS user
Result the website still ask me user name and password

4)  I change the IIS_USER to Administrator
Result the website still ask me user name and password

5)  Remove firewall
Result the website still ask me user name and password

After applying all above step the result was same, then one point click in my mind and i go to
Start > Computer Administration > User Management

and i found it the IIS_User is under the Guest group and Guest group is by default disabled in Windows 2003 server.. (that's why i hate some time with Microsoft)

I simply remove the guest group from the IIS_User property and Add under the IIS user group and then the website will run perfectly with anonymous user

It's a silly stuff but it eat my whole day to resolve the issue. Hope it save your time

Note: Normally if you apply the first 5 steps with XP or vista or Windows 7 the website will allow with  anonymous access but  if you are on server you must check the last step because i did find that solution in over all google

Rashid Imran Bilgrami


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