File extension CSO (.CSO) information

Windows cannot open CSO files?

If Windows is unable to open file extension .CSO 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 .CSO file extension identifies Compressed ISO Image files. These are usually associated with PlayStation portable games which are compressed to improve portability. Programs that can read this type of file include CISO Converter or PSP ISO Compressor.. Incorrect associations are the cause of many file extension errors. Scan your system to prevent, identify and repair CSO file extension association errors.


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  • Drivers: Scan your PC for the outdated drivers which lead to system errors and slowdowns.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