The File Extensions Database

.APF File Extension

  • Developer by: Adobe Systems
  • Category: Misc Files
  • Format: Binary

What is an .APF file?

.APF is Adobe Profile File

Certificate file used by Adobe Acrobat as well as other Adobe programs; contains a digital certificate that is used to authorize and identify a source of information.

APF files are Adobe's legacy certificate format and have not been used after Acrobat 5. They can be upgraded in Acrobat to a newer certificate format.

Programs that open Adobe Profile File
Adobe Acrobat DC
Adobe Acrobat DC
Adobe Acrobat DC
File Type 2 Sony Ericsson Firmware Acoustics File
Developer by: Sony Ericsson Category: Audio Files Format: Binary

Driver file used within the firmware of Sony Ericsson mobile devices; contains data for acoustic settings, such as sound quality and the speaker and headphone volume; used for "modding" a Sony Ericsson device.

APF files can be found in the ifs\settings\acoustic\ directory on Sony Ericsson mobile devices.

Programs that open Sony Ericsson Firmware Acoustics File
Sony Ericsson PC Suite
Sony Ericsson PC Suite

How to solve problems with APF files

  • Associate the APF file extension with the correct application. On :
    Windows: Right click on any APF file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.APF files". Mac: Right click (or Ctrl-click) the APF 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 .APF is Adobe Profile File. Because only the current version supports the latest APF file format. Search, therefore, e.g. on the Adobe Systems manufacturer website after an available .APF is Adobe Profile File update.
  • To make sure that your APF file is not corrupted or virus-infected, get the file again and scan it with antivirus software.