how to avoid challenge window when windows authentication mode is

[andy]

I got web app (asp.net) with authenticaiton mode set to windows.
I don't have impersonate on since I need to get NT credentials who access
the web app. My iis is set to on for "integration window authentication ".

But basically I don't know how to remove User/Pwd challenge (NT) popup
everytime users access the site. Any idea?

 

[Guest]

I got web app (asp.net) with authenticaiton mode set to windows.
I don't have impersonate on since I need to get NT credentials who access
the web app. My iis is set to on for "integration window authentication ".

But basically I don't know how to remove User/Pwd challenge (NT) popup
everytime users access the site. Any idea?

Check the settings of the Local Intranet Zone in IE.

Internet Options - Security - Local Intranet - Custom Level

Scroll down, User Authentication.

Set Aut. logon only in Intranet Zone

Also try to add the site to the Local intranet zone.

Internet Options - Security - Local Intranet - Sites