You are currently offline, waiting for your internet to reconnect

OL2002: Error Message in the Mso.dll File When You Reply to an E-Mail Message that Was Sent By Using the "Have Replies Sent To" Option

This article has been archived. It is offered "as is" and will no longer be updated.
When you try to reply to an e-mail message you receive that was sent by using the "Have Replies Sent to" option, you may receive the following error message:
Microsoft Outlook has encountered a problem and needs to close. We are sorry for the inconvenience.
When you click to view the details of the error message, you find that the error occurred in the Mso.dll file.
This problem may occur if the following conditions are true:
  • You installed the update as described in the following article in the Microsoft Knowledge Base:
    318120 OL2002: How to Turn Off the Security Feature That Displays the Full Address for Unresolved Recipient Names
  • The sender of the e-mail message that you are replying to sent the e-mail message as a commercial message and had the Have replies sent to option selected.

Service Pack Information

This problem is corrected in 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 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 fix 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-May-2003  05:48   3,231,668   Outlookop.msp (Client Patch)   10-May-2003  08:25   6,988,428   Outlookff.msp  (Full File Patch)
After the hotfix is installed, the following files will have the listed attributes or later:
   Date          Time   Version        Size       File name        -------------------------------------------------------   20-Dec-2002  00:41  10.0.4817.0     109,128  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         08-May-2003  21:08  10.0.5306.0   6,318,664  Outllib.dll         11-Oct-2002  22:14  10.0.4608.0      92,744  Outlmime.dll        08-May-2003  21:08  10.0.5306.0      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

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Office XP Service Pack 3.

Article ID: 820367 - Last Review: 01/17/2015 16:58:15 - Revision: 3.2

Microsoft Outlook 2002 Service Pack 2

  • kbnosurvey kbarchive kbautohotfix kbqfe kbhotfixserver kbemail kbbug kbfix kbofficexppresp3fix KB820367