User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; InfoPath.1; .NET CLR 2.0.50727) Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:188.8.131.52) Gecko/20080702 Firefox/184.108.40.206 The problem with Firefox is that each window of Firefox on the same PC will send the very same session cookie to my server (unless I am able to specify separate profiles). I specify the URL of "application 1" it prompt me to enter Login Name and Password. After follows authentication and authorization, I successfully login in "application 1". Now I open Firefox window 2 and specify same URL as I entered at the starting of "application 1" Problem start here -> even if I want to log on to "application 1" with different user and password, I am not able to do this. When I entered URL ,I directly redirect to "application 1" without prompting to enter User Name and Password. But it is works in Microsoft IE. Rather than send a new cookie and have a second session file set up on my server, the Firefox sends the same cookie and "steals" the session file from the first application. When opening a window or tab by using the "open in new window" or "open in new tab" options when you right-click a link should keep you in the same session scope With Internet Explorer, when you start a new IE window by clicking on the program icon on your desktop, it starts with a completely different "session". Reproducible: Always Steps to Reproduce: 1.User uses Firefox and launched web applicarion on a one window 2.User launches new window(second window) with same web application URL. 3.User is launched into the web application without a login prompt. Actual Results: User is launched into the web application without a login prompt. Expected Results: When web application launches in new window it prompted for login.