A pnff file extension is related to the Norton FastFind and used for its some kind of data.
PNFF file extension - Norton FastFind data
What is pnff file? How to open pnff files?
File type specification:
The pnff file extension is associated with the Norton FastFind a part of the Norton NT Tools, available for Microsoft Windows operating system.
The pnff file stores some kind of data.
This pnff 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.