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Add-ins are disabled if a process starts Outlook 2002

This article was previously published under Q329098
This article has been archived. It is offered "as is" and will no longer be updated.
IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:
256986 Description of the Microsoft Windows Registry
Symptoms
If you use a custom Component Object Model (COM) add-in with Microsoft Outlook, after you start Outlook, the add-in may not load or work correctly.
Cause
This problem may occur if another process, such as Microsoft ActiveSync version 3.5, starts Outlook but does not display any Outlook user interface. If this occurs and you then start Outlook as you typically do, Outlook does not load any COM add-ins.
Resolution

Service Pack Information

This problem is corrected in Microsoft Office XP Service Pack 3.

To resolve this problem, obtain the latest service pack for Microsoft Office XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
307841 OFFXP: How to Obtain the Latest Office XP Service Pack

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 this specific problem.

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, submit a request to 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.

The global version of this hotfix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
   Date           Time        Size           File name        -------------------------------------------------------   10-Apr-2003    14:22       6,987,828      Outlookff.msp   10-Apr-2003    11:19       3,240,796      Outlookop.msp				
After the hotfix is installed, the following files will have the listed attributes or later:
   Date         Time   Version       Size     File name        -------------------------------------------------------   19-Sep-2002  21:23  10.0.4517.0   105,032  Envelope.dll   09-Jan-2003  22:31  10.0.4907.0   346,696  Exsec32.dll   09-Aug-2002  03:22  10.0.4406.0   137,800  Impmail.dll   28-Feb-2003  01:56  10.0.5025.0   543,304  Outlcm.dll   14-Mar-2003  07:55  10.0.5112.0   100,936  Outlctl.dll   10-Apr-2003  07:32  10.0.5208.0 6,318,664  Outllib.dll   11-Oct-2002  22:14  10.0.4608.0    92,744  Outlmime.dll   10-Apr-2003  07:32  10.0.5208.0    47,688  Outlook.exe   22-Mar-2003  03:06  10.0.5119.0   121,416  Outlph.dll   25-Nov-2002  18:50  10.0.4721.0    47,688  Recall.dll				
This fix is a post-Office XP Service Pack 2 (SP-2) fix. To install the fix, you must have Office XP SP-2 installed. For additional information about Office XP SP-2, click the following article number to see the article in the Microsoft Knowledge Base:
325671 OFFXP: Overview of the Office XP Service Pack 2
Additionally, you may have to install Windows Installer 2.0 to install this fix. For additional information about the Windows Installer requirement for post-Office XP SP-2 fixes, click the following article number to see the article in the Microsoft Knowledge Base:
330537 OFFXP: Office XP Updates and Patches Released After September 2002 May Require Windows Installer 2.0

WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk. After you apply the fix, enable the fix by adding the ForceOutlookSessionForOM value.

To do this, follow these steps:
  1. Quit Outlook 2002.
  2. Click Start, click Run, type regedit in the Open box, and then click OK.
  3. Locate and then click the following registry key:
    HKEY_CURRENT_USER\SOFTWARE\Policies\Microsoft\Office\10.0\Outlook
  4. Click Edit, click New, and then click DWORD Value.
  5. Type ForceOutlookSessionForOM, and then press ENTER. This creates a new DWORD value named ForceOutlookSessionForOM.
  6. With the new ForceOutlookSessionForOM DWORD value selected, click Edit, and then click Modify.
  7. In the Value data box, type 1, and then click OK.

    Note Setting the ForceOutlookSessionForOM DWORD value to 0 will disable the fix.
  8. Quit Registry Editor.
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section of this article.
This problem was first corrected in Office XP Service Pack 3.
More information
If you do not have the hotfix installed and you re-enable the COM add-in so that it loads, it is not trusted in the Outlook 10 Security Settings folder.
References
For additional information about creating COM add-ins, click the article number below to view the article in the Microsoft Knowledge Base:
291163 OL2002: How to Create a COM Add-in for Outlook
For additional information about available resources and answers to frequently asked questions about Microsoft Outlook solutions, click the following article number to view the article in the Microsoft Knowledge Base:
287530 OL2002: Questions About Custom Forms and Outlook Solutions
OutSol OutSol2002 kb2HR1
Properties

Article ID: 329098 - Last Review: 10/25/2013 21:59:00 - Revision: 7.0

Microsoft Outlook 2002 Standard Edition

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