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Description of the Outlook 2003 hotfix package (Outlooknminus1.msp): September 23, 2009

Support for Office 2003 has ended

Microsoft ended support for Office 2003 on April 8, 2014. This change has affected your software updates and security options. Learn what this means for you and how to stay protected.

This article describes the Microsoft Office Outlook 2003 issue that is fixed in the hotfix package that is dated September 23, 2009.

Issue that this hotfix package fixes

On a computer that has Microsoft Office Outlook 2003 Service Pack 2 (SP2) installed, external content is always blocked for attached e-mail messages after you install security update 949031 (security bulletin MS08-015).

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.


To install this hotfix, you must have Office 2003 SP2 installed.

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

Registry information

To resolve this problem, you must configure the DisableSenderTypeSecurity registry entry after you install the hotfix package. To do this, follow these steps:
  1. Start Registry Editor. To do this, use one of the following methods, as appropriate for your operating system.
    • In Windows Vista, click Startthe Start button, type regedit in the Start Search box, and then press ENTER.

      User Account ControlIf you are prompted for an administrator password or for confirmation, type the password, or provide confirmation.
    • In Windows XP, click Start, click Run, type regedit in the Open box, and then click OK.
  2. Locate and then click the following registry subkey:
  3. On the Edit menu, point to New, and then click DWORD Value.
  4. Type DisableSenderTypeSecurity, and then press ENTER.
  5. Right-click DisableSenderTypeSecurity, and then click Modify.
  6. In the Value data box, type 1, and then click OK.
  7. Exit Registry Editor.
Note If the sender of the attached e-mail message that has the blocked content is not someone from your own organization, the content may still be blocked. Therefore, you have to add the domain name of the sender if you want Outlook to automatically display the blocked content in the attached e-mail message.

File information

This hotfix may not contain all the files that you must have to fully update a product to the latest build. This hotfix contains only the files that you must have to correct the issue that is listed in this article.

The global version of this hotfix package uses a Microsoft Windows Installer package to install the hotfix package. The dates and the times for these files are listed in Coordinated Universal Time (UTC) in the following table. When you view the file information, the date is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Download information
File nameFile versionFile sizeDateTimePlatform

Microsoft Windows Installer .msp file information
File nameFile versionFile sizeDateTimePlatform
Outlooknminus1.mspNot Applicable11,953,66411-Sep-200905:48Not Applicable

Hotfix information
File nameFile versionFile sizeDateTimePlatform
Olkprtid.xmlNot applicable81,02826-Aug-200312:43Not applicable

Note For most external content, Outlook checks the sender type of e-mail messages to determine whether to display the content. E-mail messages from an internal sender are considered safe. Therefore, all external content that comes from an internal sender is allowed. Security update 949031 changes this behavior for attached e-mail messages and for e-mail messages that are based on a file system. When security update 949031 is applied, external content is blocked regardless of the sender type. When you install hotfix 975123 and then configure the DisableSenderTypeSecurity registry entry, Outlook can now check the sender type. Therefore, when you set the value of the DisableSenderTypeSecurity registry entry, Outlook checks the sender type and determines whether you can view external content for attached e-mail messages.
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates
For more information about security bulletin MS08-015, click the following article number to view the article in the Microsoft Knowledge Base:
949031 MS08-015: Vulnerability in Microsoft Outlook could allow remote code execution

Article ID: 975123 - Last Review: 10/23/2009 07:29:20 - Revision: 1.1

Microsoft Office Outlook 2003

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