A meeting update message or a meeting cancellation message from an Exchange 2003 user is not delivered to an Exchange 2007 user
Important This article contains information about how to modify the registry. Make sure that you 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 (http://support.microsoft.com/kb/256986/) Description of the Microsoft Windows registry On This PageSYMPTOMSConsider the following scenario. A Microsoft Exchange Server 2003 organization and a Microsoft Exchange Server 2007
organization exchange communications by using SMTP. An Exchange 2003 user organizes a meeting and then sends a meeting request to an Exchange
2007 user. Additionally, the Exchange 2007 user accepts the meeting request. Then, the meeting organizer uses Microsoft Office Outlook to send a meeting update message or a meeting cancellation message to the Exchange 2007 user. In this scenario, the meeting update message or the meeting cancellation message is not delivered to the Exchange 2007 user. Instead, the meeting update message or the meeting cancellation message goes into the SMTP retry queue. If an administrator tries to open the message in the Exchange System Manager console, the administrator may receive the following error message: Unable to open for
delivery Additionally, if the diagnostics logging of the
MSExchangeTransport component is set to maximum, the following warning is
logged:Event Type: Warning
CAUSEWhen an Exchange 2007 user accepts a meeting request from an
Exchange 2003 user, the
X-MICROSOFT-CDO-ATTENDEE-CRITICAL-CHANGE attribute is missed. In the Outlook
client, if the X-MICROSOFT-CDO-ATTENDEE- CRITICAL-CHANGE attribute is missing,
the PR_RECIPIENT_TRACKSTATUS_TIME property is set to "1/1/1601 00:00:00
AM." When the Exchange 2003 user tries to send an update of the meeting request or a cancellation of the meeting
request, the value of the PR_RECIPIENT_TRACKSTATUS_TIME property cannot be
successfully converted from the MAPI format to the MIME format by using the
VariantTimeToSystemTime function. RESOLUTIONWarning 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 the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk. After you install the hotfix, you must create the FixRecipientTrackStatusTime register entry to enable the hotfix. To do this, follow these steps:
Hotfix informationA 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 (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.PrerequisitesMicrosoft Exchange Server 2003 Service Pack 2 (SP2) must be installed before you apply this hotfix. For more information, click the following article number to view the article in the Microsoft Knowledge Base:836993
(http://support.microsoft.com/kb/836993/)
How to obtain the latest service packs for Exchange Server 2003
Restart requirementYou do not have to restart the computer after you apply this hotfix. However, the following services are automatically restarted when you apply this hotfix:
Hotfix replacement informationThis hotfix does not replace a previously released hotfix.File informationThe 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.
STATUSMicrosoft
has confirmed that this is a problem in the Microsoft products that are listed
in the "Applies to" section. APPLIES TO
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