Disabling the Microsoft XP Service Pack 2 Pop-up Blocker
With the release of Microsoft?s Service Pack 2, Pop-Up blocking is now directly integrated into Internet Explorer. Note that by default Pop-Up blocking is enabled within SP2.
Listed below is the location of the menu within Internet Explorer:
Click on Turn Off Pop-up Blocker. Once this is done, return to the launch page for your web map. If there are no Pop-up warnings or error messages on the launch page you have successfully disabled your Pop-up blocker.