A vault file extension is associated with the Fontcase and used for its vault files.
There is one other file type using
the VAULT file extension!
.vault - AVG Antivirus vault
VAULT file extension - Fontcase font vault
What is vault file? How to open vault files?
File type specification:
The vault file extension is associated with the Fontcase, a font management application for Apple Mac OS X (macOS) operating system developed by Bohemian Coding.
The vault file stores font vault.
The Fontcase is obsolete product without support from developer.
This vault 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.