Choose which prerequisites to install

Feature Prerequisites. The following procedure explains what typically occurs at run time when an end user launches an installation that includes setup and feature prerequisites. Note that some of the steps apply to only certain project types. If ISInstallPrerequisites cannot find the setup launcher in that location, it searches elsewhere. For maintenance mode, ISInstallPrerequisites checks paths that are related to the installation source path.

If ISInstallPrerequisites still cannot find the setup launcher, or if it finds multiple. If the end user identifies the file, the installation continues. Otherwise, the installation ends. If a target system needs one or more setup prerequisites to be installed, the setup launcher typically displays the setup prerequisite dialog before the main installation starts.

This setup prerequisite lists all of the nonhidden setup prerequisites that are missing from the target system. When an end user clicks the Install button on this dialog, the setup launcher launches the necessary setup prerequisite installations. If one or more of the setup prerequisites is marked as requiring administrative privileges and the installation is run on a system on which User Account Control UAC is enabled, the Install button on this dialog has the shield icon to alert the end user that elevated privileges are required.

If a setup prerequisite is configured to be hidden, it is not listed in the setup prerequisite dialog, but it is still installed. If all of the setup prerequisites in an installation are hidden, the installation displays the setup launcher's standard initialization dialog instead of the setup prerequisite dialog. Tip: For instructions on how to show or hide the setup prerequisite in the setup prerequisite dialog, see Specifying Whether to Include the Name of a Prerequisite in the List of Setup Prerequisites to Be Installed on the Target System.

If the file that a setup prerequisite installation launches is an. If a setup prerequisite is configured to be optionally installed by the end user, the setup launcher displays a message box that enables end users to choose whether to install the setup prerequisite. If an installation includes feature prerequisites, the setup launcher does not list them in any prerequisite dialog. However, the user interface does show progress messages if appropriate.

In addition, the setup launcher displays the optional prerequisite message box if the feature prerequisite is marked as optional. Instead of packaging and publishing prerequisites, you can also specify a download location for the components. For example, rather than including prerequisites with every application that you publish, you might use a centralized file share or Web location that contains the installers for all of your prerequisites—at install time, the components will be downloaded and installed from that location.

You should add prerequisite installer packages to your development computer before you publish your first ClickOnce application. Prerequisites are managed in the Prerequisites dialog box, accessible from the Publish pane of the Project Designer. In addition to the predetermined list of prerequisites, you can add your own components to the list.

For more information, see Creating bootstrapper packages. In the Organization page, you can condition the feature installation. Each feature-based or post-install prerequisite create its feature entry in the Organization page. You can condition the feature installation through the installation behavior section from the feature properties.

You can condition the feature installation as you can see in the below image:. When the prerequisite have certain install conditions defined then it will be installed based its install conditions, even if the user selected to install the prerequisite.

To read more about how a prerequisite is installed, follow the How a prerequisite is scheduled for installation? Conditionally install a prerequisite based on the user's selection. Instal and configure COMs. Table of Contents.