.M09 File

The m09 file extension is associated with Microsoft Money, a personal finance management software, developed by Microsoft Corporation. As of 2010, the product is officially discontinued and no longer supported by Microsoft.

The mn1 to m16 files are created when you install a new version of Microsoft Money. As part of the conversion process, it creates a backup copy of your unconverted file.

The file uses the relevant extension to the version it was last used in.

These files are not required for Money to run, but you should be sure you will never revert to an older version of Money again before you delete them. Only these files can be opened in the previous version of Money, not the mny file.

This m09 file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.

How to open:

Use Microsoft Money to work with m09 files.

How to convert:

As far as we know, this .m09 file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.