Troubleshoot creating a Windows Installer merge module

July 23, 2020 by Louie Sharp

 

Recently, some of our readers reported that they have created a merge module for Windows Installer.

 

 


How do I merge Tosca modules?


The merge module is a special type of Windows Installer database that contains the components required to install a specific software package. [1] The merge module cannot be installed on its own, but it must be merged with the standard Windows Installer when creating an installation. Typically, a merge module, or collection of merge modules linked by dependencies, installs a software product or part of a product at runtime. Merge modules allow you to add standalone software modules for multiple installations.



For example, if multiple applications require a custom component, you can create a merge module to install and configure that component. This merge module can then be added to installation packages for any product that requires this particular component. This eliminates the need to add files, registry entries, and other components required for each installation separately. It also saves time when updates are needed because instead of being updated For all application installations, only the merge module is updated, and installations only need to be recreated.


create a merge module for windows installer

Standard merge modules have the .msm extension. [1] Some of the merge modules may be custom merge modules. These merge modules contain specific values ​​that you can use to determine the behavior of the module in your installation. For example, the author of a custom merge module can enable attributes to be set on components, to enable or disable isolated components, to specify a bitmap for a dialog, or to perform a custom action. Custom merge modules are only supported by Windows Installer 2.0 or higher. [quote needed]


What is merge module in InstallShield?


There are several predefined merge modules that install commonly used Microsoft software packages such as MDAC, ActiveX controls, MFC, SAPI, and DCOM. [quote needed]



 

 

 

 

 

 

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