New Outlook 2007 hotfix

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20 new bugs in Outlook patched.

Even though Office 2007 Service Pack 2 has been out only a short time there is already a patch for Outlook 2007.

This ‘hotfix’ is temporary and a ‘ not fully tested’ update. It is dated 30 April 2009 – only a few days after Service Pack 2 went public though it was only released to the public on 6 May.

Only install this patch if you have the specific problem mentioned and you need a patch now. It’s better to wait for a properly tested update whenever possible.


Note: Two of the bugs listed below have arisen from previous hotfixes released by Microsoft. A practical lesson in why hotfixes aren’t to be applied just for the heck of it.

If you need one of these patches, use the “View and request hotfix downloads” link at the top of the Microsoft support web page linked below. Fill in your email address and a download link for the hotfix will be sent to you.

There is another Outlook 2007 related patch (though Microsoft lists it under ‘Word’) that was released a few days ago together with other post Office 2007 Service Pack 2 patches.


Outlook 2007 hotfix package (Outlook.msp): April 30, 2009

Request the download from this page.



  • A sender sends an e-mail message that requests a read receipt to a recipient that is running Outlook 2007 in the cached mode. When the recipient reads the message, the sender does not receive the read receipt as expected.
  • Consider the following scenario. You add a Messaging Application Programming Interface (MAPI) e-mail account and an Internet Message Access Protocol (IMAP) e-mail account to a single Outlook 2007 profile.

    • When the Inbox folder for the IMAP e-mail account is active in Outlook 2007, and you delete a voice mail from a telephone, you receive the following error message in Outlook 2007: Failed to Update Headers
    • When the Inbox folder for the MAPI e-mail account is active in Outlook 2007, and you delete a voice mail from a telephone, you do not receive any error message in Outlook 2007.

  • In Outlook 2007, you change the server name of a Lightweight Directory Access Protocol (LDAP) address book. After that, the LDAP address book is not listed underWhen using mail, check names in address lists in the following orderin theAddressing dialog box as expected.
  • In Outlook 2007, when you try to send the message to more than two personal distribution lists from the Contacts folder of an additional mailbox, you receive the following error message: An unexpected error has occurred.
    Additionally, the message is never sent to the contacts in those personal distribution lists.
  • You open a document library of a SharePoint Web site in Windows Explorer. However, you may be unable to dragan e-mail message from Outlook 2007 to this library. This problem occurs when the SharePoint Web site is hosted on a port other than port 80.
  • Outlook 2007 stops responding for the duration of the Find operation when you try to search for a public folder.
  • You have a custom form in which the LayoutFlags property of a control is set to 65. In this case, you can resize the control vertically and horizontally. This form is correctly displayed in Outlook 2003. However, this form is not displayed correctly in Outlook 2007.

    For more information about how to resize a control horizontally and vertically with the form, visit the following Microsoft Web site: http://msdn.microsoft.com/en-us/library/aa204695(office.11).aspx
  • Outlook 2007 does not check the Subject Alternative Name (SAN) entries for a certificate when Outlook tries to connect to a Microsoft Exchange Server that uses the certificate through an Internet Protocol, such as IMAP, POP or SMTP. Therefore, when Outlook is trying to connect the Exchange Server, you receive the following error message: The server you are connected to is using a security certificate that cannot be verified.
  • In Outlook 2007, when you open a Group Schedule from the Calendar, the Free/Busy information for the current day may not be displayed in the Group Schedule.
  • You are running Outlook 2007 in Cached mode. When you change to the Completed Tasks view to view all tasks, and then search for a specific task, you do not receive any results.
  • When you are running Outlook 2007 and Office Communicator 2007 on a client computer, Communicator unexpectedly creates persistent Outlook connections to Exchange Server.
  • On a client computer where that locale is set to Turkish, the presence information of users is incorrectly displayed in Outlook 2007.
  • When Outlook 2007 is connected to a domain controller server or to a global catalog server that is running Windows Server 2003, you set a custom address list to be shown first in the Address Book dialog box. However, if Outlook 2007 later connects with a domain controller or a global catalog server that is running Windows Server 2008, the address list that is shown first in the Address Book dialog box is changed back to the global address list (GAL) unexpectedly.

    NoteThis problem also occurs when Outlook 2007 first connects with a Windows Server 2008 domain controller or to a global catalog and then later connects with Windows Server 2003 domain controller server or global catalog server.
  • You created an application that uses the IConverterSession::MAPIToMIMEStm method to convert messages to .eml files. When you try to convert either a read receipt or a message that has a read receipt attached to it, the application crashes.
  • In Outlook 2007, you select theAfter processing, move receipts to Deleted Itemscheck box, and then send a meeting request that requests responses from attendees. After you receive attendee responses in the Inbox folder, the responses are not moved to the Deleted Items folder as expected.
  • You create a MAPI application that sets a password on a .pst file by using ConfigureMsgService and PR_PST_PW_SZ_OLD. Then, you run the application to set a very short or NULL password. When the starting memory address is not aligned on a 4-byte boundary, the application crashes. This problem occurs after you apply hotfix package KB 961752 that is described in the following Microsoft Knowledge Base article: 961752Description of the Outlook 2007 hotfix package (Outlook.msp): February 24, 2009
  • You set the format for the operating system as Hebrew. When you try to create an appointment in Outlook 2007, some dates above the Free/Busy grid are displayed incorrectly in the Scheduling Assistant. For example, the second day of each month is displayed as the 20th of the month incorrectly. The 12th day of each month is displayed as the 21th of the month incorrectly.

    This problem only occurs after you install the hotfix package that is discussed in KB 961752.
  • You may experience slow performance in Outlook 2007 even though Outlook 2007 is configured to connect to the closest global catalog server. When this problem occurs, Outlook makes some connections to a global catalog server that is not the closest server.
  • When you are running Outlook 2007 in the online mode, you use Advanced Find to do a search in a folder of a shared mailbox. The folder in the shared mailbox has subfolders. In this case, the items that are in the subfolders are not returned as expected.

    This problem occurs when you have installed an Outlook 2007 hotfix package that is discussed in KB 959642 or KB 961752. For more information about the KB 959642 hotfix, click the following article number to view the article in the Microsoft Knowledge Base: 959642Description of the Outlook 2007 hotfix package (Mso.msp,Outlook.msp): December 16, 2008
  • In Outlook 2007, you open a meeting request from the Calendar. If you make the changes to the meeting request and then clickSave, a dialog box appears. When you clickDon’t save changes but keep the meeting openin this dialog box, the changes that you made do not appear in the meeting request.

    In Outlook 2007, you open a meeting request from the Calendar. When you clickCancel Meetingand then clickSave, a dialog box appears. When you clickDon’t save changes but keep the meeting openin the dialog box, and then close the dialog box instead of clickingOKorCancel, the meeting request closes unexpectedly. Additionally, the meeting request is no longer in the Calendar.

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