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OL2002: The "IExchExtCommands::DoCommand" Return Is Not Handled

Article ID: 331908 - View products that this article applies to.

This article was previously published under Q331908

SYMPTOMS

Microsoft Exchange Command Extensions may not work as expected in Outlook 2002.

The way that Microsoft Outlook handles the return of Exchange Command Extensions has changed in Outlook 2002. The following MAPI information describes how Exchange Command Extensions work in Outlook 2002 and Microsoft Outlook 2000:

Outlook 2000

Returning S_OK (On DoCommand) means that the command has been handled by the Exchange Command Extensions. Outlook 2000 follows the MAPI rules for DoCommand handling, and stops the Exchange Command Extensions processing.
Returning S_FALSE means the command has not been handle by the Exchange Command Extensions, and you are forwarded to the other Command Extensions until it is handled.

Outlook 2002

Outlook 2002 does not follow the MAPI rules for DoCommand handling, and still process the Exchange Command Extensions after returning S_OK (On DoCommand).
Returning S_FALSE means the command has not been handle by the Exchange Command Extensions, and you are forwarded to the other Command Extensions until it is handled.

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CAUSE

This problem occurs because of the addition of the BeforeMaximize and BeforeActivate events in Outlook 2002.

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RESOLUTION

For Outlook 2000

To resolve this problem, obtain the latest service pack for Microsoft Office 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

276367

(http://support.microsoft.com/kb/276367/EN-US/ )

OFF2000: How to Obtain the Latest Office 2000 Service Pack

For Outlook 2002

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

(http://support.microsoft.com/kb/307841/ )

How to obtain the latest Office XP Service Pack

Hotfix Information

The English version of this fix should have the following file attributes or later:

   Date         Time   Size       File name
   --------------------------------------------
   11-Nov-2002  18:14      1,804  Hotfix.txt
   11-Nov-2002  15:24  2,287,332  Outlook.msp
   11-Nov-2002  16:59  5,154,032  Outlookff.msp
   11-Nov-2002  15:41      6,657  Readme.txt

After the hotfix is installed, the English version of this fix will have 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   Version             Size   File name
   --------------------------------------------------------------
   19-Sep-2002  22:23  10.0.4517.0       105,032  Envelope.dll
   11-Oct-2002  23:14  10.0.4608.0       346,696  Exsec32.dll
   09-Aug-2002  04:22  10.0.4406.0       137,800  Impmail.dll
   08-Nov-2002  22:47  10.0.4705.0       539,208  Outlcm.dll
   08-Nov-2002  22:47  10.0.4705.0     6,314,568  Outllib.dll
   11-Oct-2002  23:14  10.0.4608.0        92,744  Outlmime.dll
   13-Sep-2002  04:52  10.0.4510.0        47,688  Outlook.exe
   08-Nov-2002  22:47  10.0.4705.0       121,416  Outlph.dll

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