.PFX File Extension
File Type 1PKCS #12 Certificate File
What is a PFX file?
Encrypted security file that stores secure certificates used to authenticate a person or device, such as a computer or web server; requires a password to be opened; can be installed by right-clicking the file and selecting "Install PFX."
File Type 2First Choice Word Processing Document
.PFX File Association 2
Text document created by the First Choice word processor.