Notes about the NFM file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The NFM file type is primarily associated with 'NFM Archival Data Format File' by Prevo Technologies, Inc.. NFM = NASA Format for the Millennia. Prevo Technologies, Inc. is currently working with NASA to develop a new, open file format specifically designed to handle the problem of long-term preservation and display of archived digital information. NFM is being developed for use by TechDoc and RedPlanet, which are both Document and Record Management applications. Popular browsers will be able to view NFM files as soon as the freely available plug-ins are ready.
Detailed information for file extension NFM:
Mime type: application/vnd.nfm
To change file associations press Windows Key
and then Apps and Features
> Default apps
> Choose default apps by file type
Invalid file associations could be the result of underlying issues within your Windows PC.