Hello Uma Shankar,
To figure out what is going wrong we need to better understand how your application works and what you tried. Did you use QA edition to record your test and then try to play it back as a regular .aii test? What steps are necessary to show the login prompt? Do you simply navigate to your test website and the logon immediate appears, or do you have to click a button or two before you see it? Is this logon in a popup window? Is it in a Silverlight ChildWindow object?
Can you zip up and send us your entire project and send it to us for study? We might be able to see what's wrong with it. You may need to open a support ticket in order to attach files.
the Telerik team
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