.MRG File

The mrg file extension is mainly associated with the Windows Installer SDK (Software Development Kit) which is used create application installation packages for Windows.

The Windows Installer merge file is a single package that includes all files, resources, registry entries, and setup logic to install a shared component. The structure of merge file (mrg file) is similar to Microsoft Windows Installer installation package file (msi file).

However, a merge module cannot be installed alone, it must be merged into an installation package using a merge tool that is a part of Microsoft Windows Installer SDK.

Files with mrg file extension can be mostly encountered as special merge files for Microsoft Windows Installer packages. Merge files are single packages that include all files, resources, registry entries, and setup logic to install a shared component.

How to open:

Use Microsoft Windows Installer SDK database editor Orca to create and open Windows Installer merge files.

How to convert:

It does not seem to be possible to convert this type of *.mrg files to anything else.