Microsoft KB Archive/251561

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XWEB: Authentication Dialog Box When You Open an MPEG Attachment

Article ID: 251561

Article Last Modified on 2/27/2007


  • Microsoft Exchange 2000 Server Standard Edition

This article was previously published under Q251561


When you attempt to open a Moving Pictures Experts Group (MPEG) attachment in the Microsoft Exchange 2000 Server Outlook Web Access (OWA) client by using Microsoft Internet Explorer 5, you may be prompted for your user name and password even though you are already logged on to your mailbox.


MPEG attachments open in a new browser process, which causes the authentication dialog box.


This behavior is by design.

Keywords: kbbug kbnofix KB251561