The File Extensions Database

.PF File Extension

  • Developer by: Smith Micro
  • Category: Compressed Files

What is an .PF file?

.PF is Private File

A PF file is a password-protected file compressed and encrypted by Stuffit Deluxe, a popular file compression and expansion utility. It is similar to a .SIT file, but requires a password to decrypt and decompress. PF files are often used for archiving confidential or personal data.

You can open PF files with Stuffit Deluxe in Windows or macOS. However, the PF files will not open unless the correct password is entered. Also, it is important to extract the contents of a PF file on a safe device because the contents, which may be documents, images, videos, etc., are most likely sensitive.

Programs that open Private File
Smith Micro StuffIt Deluxe for Windows
Smith Micro StuffIt Deluxe 16
File Type 2:

Windows Prefetcher File

Developer by: Microsoft Category: Data Files Format: Binary

File created by Prefetcher, a component of Windows Memory Manager that speeds up the boot process and application loading; contains a trace log of Prefetcher events; records what code and data are accessed during boot and application loading processes.

PF files are typically stored in the \Windows\Prefetch\ directory. The boot process trace file always has the name NTOSBOOT-B00DFAAD.PF.

NOTE: PF files are used by Windows XP or later.

How to solve problems with PF files

  • Associate the PF file extension with the correct application. On :
    Windows: Right click on any PF file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.PF files". Mac: Right click (or Ctrl-click) the PF file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .PF is Private File. Because only the current version supports the latest PF file format. Search, therefore, e.g. on the Smith Micro manufacturer website after an available .PF is Private File update.
  • To make sure that your PF file is not corrupted or virus-infected, get the file again and scan it with antivirus software.