How to open a file with .CSO extension?

File Type : CISO Compressed ISO CD Image
Compatible with (Win10, Win8, Win7, Vista and WinXP)

You'll need a new app to open this .CSO file

Searching for the right program to open .CSO files?

"You'll need a new app to open this file" is probably the most common error faced by millions of Windows users every day. This is either because the program required to open a file is not available on your system or there may be other issues.

We recommend that you run a free scan to check for missing drivers.


What is .CSO file extension?

Compressed .ISO disk image file used for archiving PlayStation Portable (PSP) games; can incorporate up to nine layers of compression; created by program such as Prometeus and YACC (Yet Another CSO Compressor). NOTE: Greater levels of compression can cause CSO disk images to load slowly.
You can see a list of software programs here on easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.

Software that can be used to open CSOfiles:

  • UMDGen
  • CisoPlus!
  • PSP ISO Compressor
  • YACC
  • Prometeus