Microsoft KB Archive/935695

= Windows Installer 4.5 Beta is now available =

Article ID: 935695

Article Last Modified on 10/26/2007

-

APPLIES TO


 * Microsoft Windows Installer 3.1

-





Beta Information
This article discusses a beta release of a Microsoft product. The information in this article is provided as-is and is subject to change without notice.

No formal product support is available from Microsoft for this beta product. For information about how to obtain support for a beta release, see the documentation that is included with the beta product files, or check the Web location where you downloaded the release.



INTRODUCTION
Microsoft Windows Installer 4.5 Beta is now available as a redistributable package. Windows Installer 4.5 Beta makes shipping multiple packages as a single product easier. Windows Installer 4.5 Beta also addresses issues in earlier versions of Windows Installer.



Supported operating systems
You can use Windows Installer 4.5 Beta in the following operating systems:
 * Windows XP Service Pack 2
 * Windows Vista
 * Windows Server 2003 Service Pack 2
 * Windows Server 2003 R2



New features in Windows Installer 4.5 Beta
The following new features are available in Windows Installer 4.5 Beta.

Multiple package transaction

In a multiple package transaction, you can create a single transaction from multiple packages. In a multiple package transaction, a chainer is used to dynamically include packages in the transaction. If any of the packages do not install as expected, you can roll back the installation.

Embedded UI handler

You can embed a custom user interface (UI) handler in the Windows Installer package. This makes a custom UI easier to integrate. You can also invoke an embedded UI handler from the Add or Remove item in Control Panel. Or, you can invoke an embedded UI handler during a Windows Installer repair process.

Embedded chainer

You can use the embedded chainer to add packages to a multiple package transaction. You can use an embedded chainer to enable installation events across multiple packages. For example, you can enable the install-on-demand events, the repair events, and the uninstall events across multiple packages.

Update supersedence resiliency

This feature enables you to correct for changes in the FeatureComponent table during supersedence.

Shared component patching resiliency during uninstall

This feature makes sure that the most recent version of a component is available to all the products.

Custom action execution on update uninstall

This feature enables an update to add or change a custom action so that the custom action is called when an update is uninstalled.

How to obtain Windows Installer 4.5 Beta
To obtain Windows Installer 4.5 Beta, follow these steps:  Visit the following Microsoft Web site:

https://connect.microsoft.com/default.aspx

 Click Sign in. Sign in, or create a new account. Click Available Connections. Next to Windows Installer 4.5 Beta, click Apply.</ol>

<div class="references_section">