Files with msm file extension can be typically found as modules from Windows Installer app deployment platform. Used to deliver components during the installation.

There are 2 other file types using
the MSM file extension!

empty icon.msm - ArchiCAD Geometric Description Language data

empty icon.msm - Multisim circuit diagram

Detailed description

Software that open msm file

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MSM file extension - Windows Installer merge module

What is msm file? How to open msm files?

File type specification:

Various data file type icon Various data file type

msm file icon: msm filetype icon

The msm file extension is mostly known to be used for Windows Installer Merge module files.

Merge modules provide a standard method by which developers deliver shared Windows Installer components and setup logic to their applications. Merge modules are used to deliver shared code, files, resources, registry entries, and setup logic to applications as a single compound file. Developers authoring new merge modules or using existing merge modules should follow the standard outlined in this section.

A merge module is similar in structure to a simplified Windows Installer .msi file. However, a merge module cannot be installed alone, it must be merged into an installation package using a merge tool. Developers wanting to use merge modules must obtain one of the freely distributed merge tools, such as Mergemod.dll, or purchase a merge tool from an independent software vendor. Developers can create new merge modules by using many of the same software tools used to create a Windows Installer installation package, such as the database table editor Orca provided with the Windows Installer SDK.

When a merge module is merged into the .msi file of an application, all the information and resources required to install the components delivered by the merge module are incorporated into the application's .msi file. The merge module is then no longer required to install these components and the merge module does not need to be accessible to a user. Because all the information needed to install the components is delivered as a single file, the use of merge modules can eliminate many instances of version conflicts, missing registry entries, and improperly installed files.

The default software associated to open msm file:

Windows Installer icon

Microsoft Corporation logoWindows Installer  Microsoft Windows software

Company or developer:
Microsoft Corporation

Microsoft Windows Installer is installation and configuration service included in the Microsoft Windows 2000, XP, Vista, 7 as well as Windows Server family. Windows Installer provides standard format for Windows component management.

Microsoft Visual Studio icon

Microsoft Corporation logoMicrosoft Visual Studio  Multiplatform software

Company or developer:
Microsoft Corporation

Microsoft Visual Studio is an integrated development environment (IDE) used to create applications for Microsoft Windows, Windows Mobile, .NET Framework, Silverlight as well as dynamic websites and web applications. Visual Studio is available for Windows and Mac.

Help how to open:

Probably can be edited using WIndows Installer SDK, but that's not something for common user.

How to convert:

Aconversion for this particular file type is unlikely.

List of recommended software applications associated to the .msm file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open msm file, edit msm file, convert msm file, view msm file, play msm file etc. (if exist software for corresponding action in File-Extensions.org's database).

Unspecified and all other actions for computer programs working with msm file - Windows Installer merge module

Click on the software link(s) for more information. Suggested software applications use msm file type for internal purposes and/or also by different way than common edit or open msm file actions.

Microsoft Windows:

Main software associated with msm file by default:
Windows Installer small icon Windows Installer
Other suggested software:
Windows Installer XML

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