File extension CAL (.CAL) information

Windows cannot open CAL files?

If Windows is unable to open file extension .CAL you may have registry related errors or may not have the appropriate program installed. We strongly recommend that you run a free registry scan.

Appropriate program:

The .CAL file extension is used by a variety of calendar applications to save data including custom images, formatting together, dates and events. Although the .CAL file extension is used by a range if similar applications, (such as Print Shop, Printmaster and Calendar Creator) it may be necessary to open this file using the same application that created it.. Incorrect associations are the cause of many file extension errors. Scan your system to prevent, identify and repair CAL file extension association errors.


  • Performance: To optimize memory and CPU usage for CAL files run a free performance scan.
  • Stability: Fix CAL errors to make your system and applications more stable.
  • Drivers: Scan your PC for the outdated drivers which lead to system errors and slowdowns.

You are currently viewing the detail page for ABF file extension. This page contains a detailed description of the ABF file type, software tools to help resolve file association errors in the Windows registry together with relevant system utility applications and other related information.