Microsoft KB Archive/928837

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You cannot use the Window.Open method to open or download a file on a Windows XP Service Pack 2-based computer

Article ID: 928837

Article Last Modified on 12/15/2006


  • Microsoft Windows XP Service Pack 2, when used with:
    • Microsoft Windows XP Professional
    • Microsoft Windows XP Home Edition


Consider the following scenario:

  • You use the Window.Open method to open an unrecognized file on a Microsoft Windows XP Service Pack 2 (SP2)-based computer.
  • The Information Bar displays a message that it has blocked downloads from the site, and you are prompted to click the Information Bar to select an option from a list.
  • In the list, you click Always Allow Pop-ups from this Site.

In this scenario, a pop-up window briefly appears and then disappears. The File Download dialog box does not appear as expected, and you cannot open or download the file.


  • This behavior occurs even if you add the site to the Allowed sites list in the Pop-up Blocker settings dialog box.
  • This behavior typically occurs when you open certain types of files that cannot be displayed directly in Windows Internet Explorer, such as a file that has a .doc or .xls file name extension. By default, these file types are not displayed directly in Internet Explorer.
  • This behavior does not occur when you open files that can be displayed directly, such as PDF files and files that have a .txt or .htm file name extension.


To work around this behavior, add the site to the Local Intranet zone in Internet Explorer. To do this, follow these steps:

  1. On the Tools menu, click Internet Options.
  2. On the Security tab, click Local Intranet, and then click Sites.
  3. Click Advanced in the Local intranet dialog box.
  4. In the Add this Web site to the zone box, type the URL of the site.
  5. Click OK two times.
  6. Click OK to close the Internet Options dialog box.

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