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Frequently Asked Questions

eSync 4.1
eSync Warehouse - Microsoft Outlook Edition


Installing Microsoft Collaboration Data Objects (CDO) for Microsoft Outlook 97

Since eSync 4.1 was released, Microsoft has made freely available the communication software, CDO 1.21, which will allow eSync 4.1 and eSync Warehouse to work with Microsoft Outlook 97.

To assist the installation of Microsoft CDO, Advansys have provided an installation program at the following URL:

To install Microsoft CDO, download and run the installation file, esynccdo.exe, above. Do not have Outlook 97 running when you run the esynccdo.exe installation file.

If you continue to experience problems using eSync with Outlook, a compatibility assessment utility is available for download at:



The following information has been included only for completeness of reference information. The Advansys installer for Microsoft CDO will automatically install the correct CDO files to your computer.

The CDO software required for use with Microsoft Outlook 97 can be downloaded from the URL shown below:

Please note that there is a specific CDO version for Win95/98 and one for WinNT.

CDO 1.21 Readme File

Information in this document is subject to change without notice.
The names of companies, products, people, characters, and/or data mentioned
herein are fictitious and are in no way intended to represent any real individual,
company, product, or event, unless otherwise noted. Complying with all applicable
copyright laws is the responsibility of the user. No part of this document may be
reproduced or transmitted in any form or by any means, electronic or mechanical,
for any purpose, without the express written permission of Microsoft Corporation.
If, however, your only means of access is electronic, permission to print one copy
is hereby granted.

Microsoft may have patents, patent applications, trademarks, copyrights, or
other intellectual property rights covering subject matter in this document.
Except as expressly provided in any written license agreement from Microsoft,
the furnishing of this document does not give you any license to these patents,
trademarks, copyrights, or other intellectual property.

(c) 1999 Microsoft Corporation. All rights reserved.

Microsoft, Windows NT, and Visual Basic are registered trademarks and Outlook is a
trademark of Microsoft Corporation in the USA and other countries.
Other product and company names mentioned herein may be the trademarks of
their respective owners.


The following information describes the Microsoft(r) Collaboration Data Object
(CDO) 1.21 library and outlines the steps for installing CDO 1.21.

The CDO 1.21 DLL is designed for use with Microsoft Outlook(tm) 97,
Microsoft Outlook 98, and Microsoft Outlook 2000.
CDO 1.21 is not compatible with the version of MAPI installed with the
Windows(r) Messaging System. To ensure compatibility, Microsoft Outlook 97,
Outlook 98, or Outlook 2000 must be installed for CDO to function properly.

The following list describes which version of CDO is installed with a particular
version of Microsoft Outlook:

* Microsoft Outlook 97 included Active Messaging 1.1.
* Microsoft Outlook 98 installs CDO 1.21 during installation.
* Microsoft Outlook 2000 includes CDO 1.21 as an optional component install.

CDO 1.21 is a fully compatible upgrade for OLE Messaging 1.0,
Active Messaging 1.1, and CDO 1.2.

There are two versions of CDO 1.21, one for Windows 95 and Windows 98 and another
for Windows NT(r). When installing CDO 1.21 you must include the proper version
of the library. Using the Windows 95 or Windows 98 version on Windows NT, and
vice versa, is not supported and may cause unpredictable results.

Both versions of the CDO.DLL may contain the same version number but have
different descriptions. The Windows 95/Windows98 version contains the following
description: 'Collaboration Data Objects 1.21 for Windows 95.'

Installing CDO

1. Copy the appropriate CDO.DLL file to the Windows\System32 Directory.

There is a two versions of the CDO.DLL: one for
Windows 95/Windows 98 and another for Windows NT.
Make sure you copy the correct DLL to your machine.

2. Register the CDO.DLL by executing REGSVR32.EXE CDO.DLL.

If Active Messaging is installed, it is not necessary to unregister OLEMSG32.DLL
or ACTMSG.DLL, although it is good practice to do so. Also, once CDO.DLL is
installed properly, neither OLEMSG32.DLL nor ACTMSG32.DLL are required for CDO 1.21
to function.

Overview of CDO

Microsoft Collaboration Data Objects (CDO) is a technology for building messaging
and collaboration applications. The current version of CDO is 1.21.
It is designed to simplify the creation of applications with messaging
functionality, and to add messaging functionality to existing applications.
For example, CDO and Active Server Pages enable you to add scripts to a Web site
to provide support for creating, sending, and receiving e-mail as well as
participating in discussions and other public folder applications.

CDO does not represent a new messaging model, but rather an additional scripting
interface to the Messaging Application Programming Interface (MAPI) model.
CDO exposes programmable messaging objects (including folders, messages,
recipient addresses, attachments, and other messaging components), which are
extensions to the programmable objects offered as part of Microsoft Visual Basic(r),
such as forms and controls.

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Last updated: Thursday, August 31, 2000
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