There is one other file type using
the MFA file extension!
.mfa - ClickTeam source data
MFA file extension - Microsoft Site Server report definition file
What is mfa file? How to open mfa files?
File type specification:
The MFA file extension is related to Microsoft Site Server and used for files that contain report definition files.
Microsoft Site Server, first released in 1996, was Microsoft's solution to the growing difficulty of managing complex websites which included multiple technologies, such as user management and authentication/authorization, content management, analysis, and indexing and search. Site Server 2.0, released in early 1997, incorporated electronic commerce technology from Microsoft Merchant Server, Microsoft's first effort at providing a solution to the growing business of Internet-based commerce (or e-commerce). During the course of its evolution (culminating with Site Server 3.0), Site Server expanded on Merchant Server's functionality by annexing content management tools; which would typically be involved, it was thought, in facilitating the management of Web-facing content. Consequently, Site Server became not only a solution for businesses wanting to sell products online, but companies who had corporate intranet servers hosting documents.
Most likely no longer used file format.