Microsoft small business knowledge base

Article ID: 945686 - Last Review: February 3, 2011 - Revision: 2.2

On This Page


In some scenarios, you may be unable to open a PDF document in Windows Internet Explorer 7 or in Internet Explorer 6. In some scenarios, a PDF document may not appear correctly in Internet Explorer.


This problem occurs because of the method that is used to determine the MIME type of downloaded content. This problem occurs even if the content MIME type is declared as "application/pdf."


Security update information

To resolve this problem, install the most current cumulative security update for Internet Explorer. To install the most current updates, visit the following Microsoft Web site: (
For more technical information about the most current cumulative security update for Internet Explorer, visit the following Microsoft Web site: (
Note This fix was first included in security update 947864 (MS08-024). For more information, click the following article number to view the article in the Microsoft Knowledge Base:
947864  ( ) MS08-024: Cumulative Security Update for Internet Explorer


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


For more information about how Internet Explorer determines the MIME type, visit the following Microsoft Web page: (

  • Windows Internet Explorer 7
  • Microsoft Internet Explorer 6.0
atdownload kbbug kbfix kbexpertiseinter kbqfe KB945686
Additional support options
Ask The Microsoft Small Business Support Community
Contact Microsoft Small Business Support
Find Microsoft Small Business Support Certified Partner
Find a Microsoft Store For In-Person Small Business Support