The File Extensions Database

.CEF File Extension

  • Developer by: CalEd Software
  • Category: Data Files
  • Format: Binary

What is an .CEF file?

.CEF is Class Action Gradebook Elementary File

File created by the Elementary Edition of Class Action Gradebook, a program used by teachers for recording elementary school grades; saves the classroom roster and assignments as well as evaluated scores; can be used for generating report cards.

Programs that open Class Action Gradebook Elementary File
CalEd Class Action Gradebook
File Type 2 CenturionMail Encrypted Package
Developer by: CenturionSoft Category: Encoded Files Format: Binary

Encrypted archive created by CenturionMail, a program used for encrypting emails and attachments; uses both compression and encryption as well as a password that is required to extract the archive.

CEF files are used for securely sending files over email. You need the CenturionMail software in order to open them.

NOTE: By default, CenturionMail creates archives with the .ZIP, .CAB, or .EXE extensions. However, you can also use the "Custom File Extension" option to create CEF files.

Programs that open CenturionMail Encrypted Package
CenturionSoft CenturionMail

How to solve problems with CEF files

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