JSO File Type

Researcher:   |   Updated: November 26, 2018

Microsoft Silver

JSO File Summary

Only one known software program, JISO developed by isocompressor.com, is related to the JSO file extension. In addition, they are categorized under a single primary file type, described as the PSP ISO Compressor format. JSO files are categorized ordinarily as Compressed Files.

The JSO File Extension can be viewed on the Windows operating system. They are supported on both desktop and mobile devices. The main JSO file type has a Popularity Rating of "Low", meaning these files are not frequently present on your typical desktop or mobile device.

If you are having problems opening JSO files, or would simply like to learn more about the software programs and developers that are associated with them, please see the complete information contained below.

Low
Prevalence
8970
File Rank

/ 11690

Active

Status

26

November

2018

Page Last Updated

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Sorts of JSO Files


Primary JSO File Association

.JSO
Extension:.jso
Type:PSP ISO Compressor

JSO file is a JISO Compressed PSP ISO Image. It is used to compress dumped Sony PlayStation Portable (PSP) UMD games.

Created by: Sony
Division:Compressed Files
Location: HKEY_CLASSES_ROOT\.jso

Software Programs That Open The PSP ISO Compressor:


JISO by isocompressor.com

Windows

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JSO Usage


Operating System Rank

Windows (82.33%)
Android (11.56%)
iOS (3.43%)
Macintosh (1.71%)
Linux (0.60%)


Understanding JSO Issues


Common Problems Opening JSO Files

JISO Removed

You encounter an error message such as "%%os%% Can't Open JSO Files" when trying to open your JSO. When this happens, it is commonly due to JISO missing in %%os%%. Because your operating system doesn't know what to do with this file, you won't be able to open it by double-clicking.


Tip: Another JSO-related program can be selected to open the file by clicking "Show Apps" and finding the application.


Outdated JISO

In other instances, your PSP ISO Compressor file version may not be supported by your version of JISO. You will need to download a newer version of JISO if you don't have the right version. This problem is predominately due to having a PSP ISO Compressor file version that was created by a newer version of JISO than what you have installed on your PC.


Tip: Sometimes you can get a clue about the version of JSO file you have by right clicking on the file, then clicking on "Properties" (Windows) or "Get Info" (Mac OSX).


Ultimately, most of the difficulties opening JSO files are due to having the wrong version of JISO installed.


Other JSO File Issues

In the majority of cases, installing the right version of JISO will resolve your issue. If you are still having problems opening JSO files, there may be other issues that are preventing you from opening these files. Additional factors include:

  • JSO file type Registry entries are wrong
  • The JSO file description within the Windows Registry was removed
  • Defective install of a JSO program, such as JISO
  • JSO file corruption
  • Your JSO is infected with malware
  • Device drivers for JSO-related hardware are out-of-date
  • Windows cannot load your PSP ISO Compressor file due to insufficient resources (eg. RAM)

Quiz: What file extension is an audio file?








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