IE Diagnostics is a tool that gathers comprehensive dynamic and static data related to Internet Explorer. The data gathered is packaged up into a .cab file and stored on your machine at a location you specify. If you open the cab, you will find an IEDiag.xml file which contains detailed information related to IE add-ons, registry settings, network configurations, and more. (view a sample IE Diagnostics report). This data is invaluable when we need to debug a problem in IE without having direct access to the computer, such as, when trying to reproduce and investigate root causes of bugs reported by users.
"Imagine: Your mom calls you up saying her IE has been running really slow for past few days and she doesn't know why. You suspect that culprit is probably last add-on she had installed but you can't be sure until you see, first-hand, the list of add-ons installed on her machine. The problem is that she's across the country and you don't want to spend all your mobile-to-mobile minutes debugging the issue over phone. With an IE Diagnostics report, you can easily get all information you need to fix the problem. All your mom has to do is save an IE Diagnostics report and send you the cab file."
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