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Article ID: 938811 - Last Review: April 29, 2008 - Revision: 2.0

SYMPTOMS

When you install Microsoft Office 2003 Service Pack 3 (SP3), and then you try to use Microsoft Office Outlook 2003 to open an attachment that has one of the file name extensions that are listed in the "Cause" section, the attachment does not open.

CAUSE

This behavior occurs because the following file name extensions have been added to the blocked file types in Office 2003 SP3.

Level 1 file types added as blocked by Outlook 2003 SP3
Collapse this tableExpand this table
File extension File type
.der DER Encoded X509 Certificate File
.gadget Windows Vista Gadget
.msh Microsoft Shell
.mshxml Microsoft Shell
.msh1 Microsoft Shell
.msh1xml Microsoft Shell
.msh2 Microsoft Shell
.msh2xml Microsoft Shell
.plg Developer Studio Build Log
.ps1 Windows PowerShell
.ps1xml Windows PowerShell
.ps2 Windows PowerShell
.ps2xml Windows PowerShell
.psc1 Windows PowerShell
.psc2 Windows PowerShell
.xnk Exchange Public Folder Shortcut

MORE INFORMATION

These files may contain executable code that could potentially harm your computer. Therefore, these attachments have been blocked in Outlook 2003 SP3.

For information about the file types that are restricted or disabled in Outlook 2003, visit the following Microsoft Web site:
http://office.microsoft.com/en-us/ork2003/HA011402971033.aspx (http://office.microsoft.com/en-us/ork2003/HA011402971033.aspx)
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
829982  (http://support.microsoft.com/kb/829982/ ) Cannot open attachments in Microsoft Outlook
For more information about how to obtain the latest Office 2003 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
870924  (http://support.microsoft.com/kb/870924/ ) How to obtain the latest service pack for Office 2003

APPLIES TO
  • Microsoft Office 2003 Service Pack 3
  • Microsoft Office Outlook 2003
Keywords: 
kbupdateissue kbattachments kbemail kbopenfile kbtshoot kbpubtypekc kbexpertisebeginner kbprb KB938811
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