I have deployed a web application in IIS Server which is running in Tomcat 6.0 developed by Java. The application is working fine when it is deployed in my localhost not in IIS. When it is in IIS server, windows authentication popup is coming with "Connecting to x.x.x.x(Server's IP address)". After entering the correct username and password it is not allowing the user to enter into the application. Even I have not selected any authentication in IIS server, system is asking the authentication. I am facing this problem for the past two days. Can anybody help me to solve this issue?