ID: Q170802
The information in this article applies to:
When you attempt to open a document in Internet Explorer, Internet Explorer may prompt you to save the file to a disk instead of opening the document.
This behavior can occur if the Multipurpose Internet Mail Extension (MIME) content type for the document type is not defined or is incorrect.
To resolve this issue, specify the correct content type. To do this, follow these steps:
1. Try to open the document again, and then click Save To Disk when you
   are prompted to either Open or Save To Disk. This saves the file to the
   Windows desktop. Note that on a Windows 95-based computer, the path to
   the desktop is Windows\Desktop, but on a Windows NT 4.0-based computer
   the path to the desktop is Winnt\Profiles\<username>\Desktop.
   you are able to view the file's extension. To do so:
b. Click the View tab, and verify that Show All Files is selected and that
   "Hide MS-DOS file extensions for file types that are registered" is not
   selected. Note that on a Windows NT 4.0-based computer, you must verify
   that Show All Files is selected and that "Hide file extensions for
   known file types" is not selected. If needed, click either or both to
   select or clear them, and then click OK.
   For example, if you downloaded a Microsoft Word document, the file has
   a .doc extension.
5. On the View menu, click Options, and then click the File Types tab.
6. In the Registered File Types box, click the file type of the document
   you are attempting to open (this is the file extension noted in step
   3), and then click Edit.
   Note that you may be unable to determine the appropriate content type
   even if you know the file's extension, as there are many different file
   extensions created by different programs. If the appropriate content
   type is not available, or you are unable to determine the appropriate
   content type, contact the author of the Web page or the Web server
   administrator to determine what additional program is needed to open
   the file.
Additional query words: 3.02
Keywords          : kbtool msiew95 msient 
Version           : 3.02
Platform          : WINDOWSLast Reviewed: March 18, 1999