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Installation

The most current library of CDO 1.x and the CDO 1.x HTML Rendering library will be installed with the Microsoft Exchange Server 5.5 Service Pack 4. Microsoft Outlook 98 only installs CDO 1.21 because the CDO HTML Rendering library is only available as a server-side option. With Microsoft Outlook 2000 and 20002 you need to ad CDO 1.21 as custom installation option because they are not included in a typical install.

Because CDO 1.x and CDO 1.x HTML Rendering are MAPI client object libraries they require a properly installed Extended MAPI subsystem which is installed with Microsoft Exchange 5.x Server, Microsoft Exchange 5.0 Client, Microsoft Outlook 97 8.01, Microsoft Outlook 98/2000/2002. Note that earlier versions of Microsoft Exchange Server, Microsoft Exchange Client and Microsoft Outlook, and the old Windows Messaging System included in Windows 95, might ship with an outdated Extended MAPI subsystem and manually registering CDO 1.21 might not give the desired results. This is also not allowed by Microsoft.

Also be careful not to mix the installation of the Microsoft Outlook client versions on the Microsoft Exchange Server computer. If you install Microsoft Outlook 9x/200x after you have installed the Microsoft Exchange Server 5.5 without the latest Microsoft Exchange Server 5.5 Service Pack  the machine will not run properly. That is because the CDO 1.x library versions are different between Microsoft Exchange Server 5.0/5.5 and Microsoft Outlook 9x/200x.

If you want to use Microsoft Exchange Server 5.5 and Microsoft Outlook 9x/200x on the same machine install Microsoft Outlook 9x/200x first, then install Microsoft Exchange Server 5.5 and apply the most current Microsoft Exchange Server 5.5 Service Pack. Also note that Microsoft states in a Microsoft Knowledge Base Article that it is not supported to install Outlook 2000 on a Microsoft Exchange 5.5 Server computer.

For developers of Intranet or Internet based solutions a Frameset Design Time Control for Microsoft Visual InterDev is included on the Microsoft Exchange Server 5.5 CD-ROM which provides an easy way to add public folder content to a Web Site without writing any code. It does not provide the option to customize the views of the folder content and the items. It uses the standard Outlook Web Access interface to display the public folder content. For more information about the HTML forms converter, please take a look at All you ever wanted to know about ASP & CDO but were afraid to ask, FrameSet Design Time Control.

With Microsoft Exchange Server 5.5 Service Pack 1(or higher) a new HTML Forms Converter is supplied by Microsoft. With this form converter it is possible to convert Microsoft Outlook forms to HTML forms. This form converter has some restrictions, e.g. it cannot convert the form code and can only convert forms of the type IPM.NOTE, IPM.POST and IPM.CONTACT to HTML forms. More information about the forms converter is available at the Microsoft Exchange Server 5.5 Service Pack 1 (or higher) documentation. For more information about the HTML forms converter, please take a look at All you ever wanted to know about ASP & CDO but were afraid to ask, HTML Forms Converter. Note that this HTML forms converter does not work with Microsoft Exchange 2000 Server due to the changes made in the product.