Users sometimes cannot see attachments that have the .p7m extension in Outlook

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Article ID: 913966 - View products that this article applies to.
Important This article contains information about how to modify the registry. Make sure to back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:
256986 Description of the Microsoft Windows registry
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SYMPTOMS

Users in a Microsoft Exchange Server 2003 organization sometimes cannot see attachments that have the .p7m extension in the following versions of Microsoft Outlook:
  • Microsoft Office Outlook 2003
  • Microsoft Outlook 2002
  • Microsoft Outlook 2000
However, users can see attachments that have the .p7m extension if one of the following conditions is true:
  • Common attachments, such as .xls files or .doc files, are attached in addition to the .p7m attachment.
  • The e-mail message is converted from MIME to MAPI.
  • A user edits and saves the message.
  • The envelope or the parent message is encrypted or signed.
Note The .p7m extension is used for encrypted files that are sent as attachments.

RESOLUTION

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. 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:
http://support.microsoft.com/contactus/?ws=support
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.

Hotfix installation information

Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

After you apply the hotfix, you must configure the following registry entry under the
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\ParametersSystem
registry subkey:
Name: ConvertPKCS7SIGAttachmentToMAPI
Value type: DWORD
Value data: 1

Prerequisites

You must install Microsoft Exchange Server 2003 Service Pack 2 (SP2) before you apply the hotfix. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
836993 How to obtain the latest service packs for Exchange Server 2003

Restart requirement

You do not have to restart the computer after you apply the hotfix. However, the Microsoft Exchange Information Store service and all dependent services will be restarted.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) 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 item in Control Panel.
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Blank.htmNot applicable18611-Mar-200602:17Not applicable
Ctrl_calendar.cssNot applicable1,22604-May-200501:47Not applicable
Ctrl_calendar.htcNot applicable8,45211-Mar-200602:18Not applicable
Ctrl_calendar.jsNot applicable40,02411-Mar-200602:17Not applicable
Ctrl_calendarview.cssNot applicable5,41111-Mar-200602:18Not applicable
Ctrl_calendarview.htcNot applicable12,90911-Mar-200602:18Not applicable
Ctrl_calendarview.jsNot applicable95,60011-Mar-200602:17Not applicable
Ctrl_calendarviewprn.cssNot applicable69904-May-200501:47Not applicable
Ctrl_calviewdaily.xslNot applicable12,98510-Jun-200503:13Not applicable
Ctrl_calviewmonthly.xslNot applicable13,11201-Feb-200600:36Not applicable
Ctrl_calviewweekly.xslNot applicable9,35928-Nov-200517:29Not applicable
Ctrl_ctxtmenu.htcNot applicable98511-Mar-200602:18Not applicable
Ctrl_ctxtmenu.jsNot applicable6,28111-Mar-200602:17Not applicable
Ctrl_datepicker.htcNot applicable3,56311-Mar-200602:18Not applicable
Ctrl_datepicker.jsNot applicable44,29811-Mar-200602:17Not applicable
Ctrl_formatbar.htcNot applicable6,57411-Mar-200602:18Not applicable
Ctrl_formatbar.jsNot applicable24,23211-Mar-200602:17Not applicable
Ctrl_formatbar20.htcNot applicable26,69614-Feb-200600:50Not applicable
Ctrl_freebusy.cssNot applicable2,18711-Mar-200602:18Not applicable
Ctrl_freebusy.htcNot applicable1,34811-Mar-200602:18Not applicable
Ctrl_freebusy.jsNot applicable41,87011-Mar-200602:17Not applicable
Ctrl_message.htcNot applicable3,06711-Mar-200602:18Not applicable
Ctrl_message.jsNot applicable21,12711-Mar-200602:17Not applicable
Ctrl_message20.htcNot applicable21,95814-Feb-200600:50Not applicable
Ctrl_mimeformatbar.htcNot applicable6,63511-Mar-200602:18Not applicable
Ctrl_mimeformatbar.jsNot applicable14,16011-Mar-200602:17Not applicable
Ctrl_notify.htcNot applicable1,35011-Mar-200602:18Not applicable
Ctrl_notify.jsNot applicable67504-May-200501:47Not applicable
Ctrl_poll.jsNot applicable7,38304-May-200501:47Not applicable
Ctrl_reminder.htcNot applicable1,34911-Mar-200602:18Not applicable
Ctrl_reminder.jsNot applicable11,23511-Mar-200602:17Not applicable
Ctrl_tabpages.htcNot applicable86311-Mar-200602:18Not applicable
Ctrl_tabpages.jsNot applicable2,31911-Mar-200602:17Not applicable
Ctrl_tree.htcNot applicable2,73511-Mar-200602:18Not applicable
Ctrl_tree.jsNot applicable35,04711-Mar-200602:17Not applicable
Ctrl_tree_pf.htcNot applicable2,46911-Mar-200602:18Not applicable
Ctrl_tree_pf.jsNot applicable33,89011-Mar-200602:17Not applicable
Ctrl_tree_pf.xslNot applicable1,90914-Dec-200420:57Not applicable
Ctrl_view.htcNot applicable3,11411-Mar-200602:18Not applicable
Ctrl_view.jsNot applicable98,03511-Mar-200602:17Not applicable
Ctrl_view.xslNot applicable42,53301-Feb-200600:36Not applicable
Dlg_anr.jsNot applicable7,87411-Mar-200602:17Not applicable
Dlg_editname.jsNot applicable8,52004-May-200501:47Not applicable
Dlg_editrule.jsNot applicable27,74511-Mar-200602:17Not applicable
Dlg_editsignature.jsNot applicable5,97811-Mar-200602:17Not applicable
Dlg_gal.jsNot applicable23,95611-Mar-200602:17Not applicable
Dlg_gallookup.jsNot applicable7,23904-May-200501:47Not applicable
Dlg_junk.jsNot applicable9,84711-Mar-200602:17Not applicable
Dlg_movecopy.jsNot applicable6,19011-Mar-200602:17Not applicable
Dlg_newfolder.jsNot applicable3,75111-Mar-200602:17Not applicable
Dlg_options.jsNot applicable22,70811-Mar-200602:17Not applicable
Dlg_recurrence.jsNot applicable23,77504-May-200501:47Not applicable
Dlg_reminder.jsNot applicable37,11911-Mar-200602:17Not applicable
Dlg_rules.jsNot applicable11,62411-Mar-200602:17Not applicable
Dlg_spell.jsNot applicable19,54711-Mar-200602:17Not applicable
Dlg_taskrecurrence.jsNot applicable27,58604-May-200501:47Not applicable
Dl_appointment.jsNot applicable11,85604-May-200501:47Not applicable
Dl_composeapptrecurr.jsNot applicable9,38104-May-200501:47Not applicable
Dl_composecommon.jsNot applicable5,11711-Mar-200602:17Not applicable
Dl_composetaskrecurr.jsNot applicable17,56104-May-200501:47Not applicable
Dl_contact.jsNot applicable8,18021-Feb-200602:17Not applicable
Dl_folderview.jsNot applicable5,20804-May-200501:47Not applicable
Dl_junk.jsNot applicable5,04011-Mar-200602:17Not applicable
Dl_misc.jsNot applicable9,34011-Mar-200602:17Not applicable
Dl_options.jsNot applicable6,91711-Mar-200602:17Not applicable
Dl_task.jsNot applicable19,63811-Mar-200602:17Not applicable
Exmime.dll6.5.7651.9201,72813-Mar-200621:08x86
Frm_attach.jsNot applicable5,50811-Mar-200602:17Not applicable
Frm_composeappt.jsNot applicable37,80511-Mar-200602:17Not applicable
Frm_composecdl.jsNot applicable17,27711-Mar-200602:17Not applicable
Frm_composecontact.jsNot applicable36,41211-Mar-200602:17Not applicable
Frm_composecontact20.jsNot applicable29,04014-Feb-200600:50Not applicable
Frm_composenote.jsNot applicable19,59111-Mar-200602:17Not applicable
Frm_composenote20.jsNot applicable17,04314-Feb-200600:50Not applicable
Frm_composepost.jsNot applicable13,31811-Mar-200602:17Not applicable
Frm_composetask.jsNot applicable41,15411-Mar-200602:17Not applicable
Frm_forwardmeeting.jsNot applicable8,01711-Mar-200602:17Not applicable
Frm_logoff.jsNot applicable69611-Mar-200602:17Not applicable
Frm_mimecommon.jsNot applicable34,11311-Mar-200602:17Not applicable
Frm_mimenote.jsNot applicable63,08111-Mar-200602:17Not applicable
Frm_mimepreviewpane.jsNot applicable5,82711-Mar-200602:17Not applicable
Frm_previewpane.jsNot applicable3,81511-Mar-200602:17Not applicable
Frm_readappt.jsNot applicable16,00211-Mar-200602:17Not applicable
Frm_readnote.jsNot applicable7,70411-Mar-200602:17Not applicable
Frm_readpost.jsNot applicable6,47811-Mar-200602:17Not applicable
Frm_readreports.jsNot applicable4,41711-Mar-200602:17Not applicable
Frm_readtask.jsNot applicable6,72611-Mar-200602:17Not applicable
Owaprint.cssNot applicable2,69611-Mar-200602:18Not applicable
Owastyle.cssNot applicable13,58411-Mar-200602:18Not applicable
Owastyledl.cssNot applicable2,18711-Mar-200602:18Not applicable
Pdec.htcNot applicable2,55514-Feb-200600:50Not applicable
Pdec.jsNot applicable16,06911-Mar-200600:51Not applicable
Pdec30.htcNot applicable2,77311-Mar-200602:18Not applicable
Pdec30.jsNot applicable16,25311-Mar-200602:18Not applicable
Preload.htmNot applicable6,30811-Mar-200602:18Not applicable
Setupmcl.exe5.3.18.6318,72013-Mar-200621:57x86
Sps.cssNot applicable1,39904-May-200501:47Not applicable
Style-chs30.cssNot applicable39404-May-200501:47Not applicable
Style-cht30.cssNot applicable38104-May-200501:47Not applicable
Style-jpn30.cssNot applicable40010-Mar-200612:48Not applicable
Style-kor30.cssNot applicable37804-May-200501:47Not applicable
Style-large30.cssNot applicable38204-May-200501:47Not applicable
Style30.cssNot applicable38204-May-200501:47Not applicable
Tf_galfind.xslNot applicable6,94114-Dec-200420:57Not applicable
Tf_messages.xslNot applicable11,61014-Dec-200420:57Not applicable
Tf_twoline.xslNot applicable10,67714-Dec-200420:57Not applicable
Util_addrval.jsNot applicable2,11411-Mar-200602:17Not applicable
Util_buttons.jsNot applicable6,60611-Mar-200602:18Not applicable
Util_calendar.jsNot applicable4,50711-Mar-200602:18Not applicable
Util_calmessaging.htcNot applicable87611-Mar-200602:18Not applicable
Util_calmessaging.jsNot applicable10,44211-Mar-200602:18Not applicable
Util_forms.jsNot applicable26,22811-Mar-200602:18Not applicable
Util_mimemsg.jsNot applicable11,12311-Mar-200602:18Not applicable
Util_owa.jsNot applicable23,44111-Mar-200602:18Not applicable
Util_recipients.jsNot applicable18,63411-Mar-200602:18Not applicable
Util_view.jsNot applicable37,67311-Mar-200602:18Not applicable
Vw_calendar.jsNot applicable9,84011-Mar-200602:18Not applicable
Vw_calendarpart.cssNot applicable1,40111-Mar-200602:18Not applicable
Vw_calendarpart.jsNot applicable83011-Mar-200602:18Not applicable
Vw_contact.jsNot applicable2,45011-Mar-200602:18Not applicable
Vw_dumpster.jsNot applicable3,25611-Mar-200602:18Not applicable
Vw_message.jsNot applicable14,70111-Mar-200602:18Not applicable
Vw_messagepart.jsNot applicable1,95704-May-200501:47Not applicable
Vw_navbar.jsNot applicable46,44511-Mar-200602:18Not applicable
Vw_search.jsNot applicable10,43211-Mar-200602:18Not applicable
Vw_task.jsNot applicable7,17911-Mar-200602:18Not applicable
Vw_taskpart.jsNot applicable4,62411-Mar-200602:18Not applicable
Webrstr-ara.dll6.5.7651.9100,86413-Mar-200621:17x86
Webrstr-bas.dll6.5.7651.9107,00813-Mar-200621:24x86
Webrstr-brz.dll6.5.7651.9111,61613-Mar-200621:18x86
Webrstr-cat.dll6.5.7651.9113,15213-Mar-200621:24x86
Webrstr-chs.dll6.5.7651.9100,86413-Mar-200621:16x86
Webrstr-cht.dll6.5.7651.9100,86413-Mar-200607:47x86
Webrstr-cze.dll6.5.7651.9104,44813-Mar-200621:21x86
Webrstr-dan.dll6.5.7651.9104,96013-Mar-200621:22x86
Webrstr-dut.dll6.5.7651.9114,68813-Mar-200621:18x86
Webrstr-fin.dll6.5.7651.9108,03213-Mar-200621:19x86
Webrstr-frn.dll6.5.7651.9120,32013-Mar-200621:12x86
Webrstr-ger.dll6.5.7651.9117,24813-Mar-200621:11x86
Webrstr-grk.dll6.5.7651.9124,92813-Mar-200621:19x86
Webrstr-heb.dll6.5.7651.9100,86413-Mar-200621:17x86
Webrstr-hun.dll6.5.7651.9113,66413-Mar-200621:23x86
Webrstr-itn.dll6.5.7651.9114,68813-Mar-200621:13x86
Webrstr-jpn.dll6.5.7651.9100,86413-Mar-200621:14x86
Webrstr-kor.dll6.5.7651.9100,86413-Mar-200621:15x86
Webrstr-nor.dll6.5.7651.9103,42413-Mar-200607:52x86
Webrstr-pol.dll6.5.7651.9111,61613-Mar-200621:20x86
Webrstr-por.dll6.5.7651.9114,68813-Mar-200607:50x86
Webrstr-rus.dll6.5.7651.9112,12813-Mar-200621:23x86
Webrstr-spa.dll6.5.7651.9114,68813-Mar-200621:14x86
Webrstr-swe.dll6.5.7651.9105,47213-Mar-200621:21x86
Webrstr-trk.dll6.5.7651.9102,91213-Mar-200621:23x86
Webrstr-usa.dll6.5.7651.9100,86411-Mar-200602:16x86
Webrstr.dll6.5.7651.9100,86411-Mar-200602:16x86
Wmtemplates.dll6.5.7651.95,590,01611-Mar-200602:16x86

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

MORE INFORMATION

For more information about the terminology that Microsoft uses for software that is corrected after it is released, 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 the naming schema for Exchange Server software updates, click the following article number to view the article in the Microsoft Knowledge Base:
817903 New naming schema for Exchange Server software update packages

Properties

Article ID: 913966 - Last Review: October 9, 2011 - Revision: 3.0
APPLIES TO
  • Microsoft Exchange Server 2003 Enterprise Edition
  • Microsoft Exchange Server 2003 Standard Edition
Keywords: 
kbautohotfix kbHotfixServer kbqfe kbfix kbbug KB913966

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