| File type | OS/2 Configuration |
| Developer | IBM |
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CH extensions were used by OS/2 operating system files. OS/2 was developed by IBM and Microsoft as a Desktop PC operating system that implemented many features of Windows and Unix systems.
CH files were used for storing system configuration settings. OS/2 has been officially discontinued in 2006. CH format is now considered obsolete.
If you cannot open the CH file on your computer - there may be several reasons. The first and most important reason (the most common) is the lack of a suitable software that supports CH among those that are installed on your device.
A very simple way to solve this problem is to find and download the appropriate application. The first part of the task has already been done – the software supporting the CH file can be found in the table. Now just download and install the appropriate application.
The inability to open and operate the CH file does not necessarily mean that you do not have an appropriate software installed on your computer. There may be other problems that also block our ability to operate the OS/2 Configuration file. Below is a list of possible problems.
If you are sure that all of these reasons do not exist in your case (or have already been eliminated), the CH file should operate with your programs without any problem. If the problem with the CH file has not been solved, it may be due to the fact that in this case there is also another rare problem with the CH file. In this case, the only you can do is to ask for assistance of a professional staff.
Updated 04/27/2022
| .a2theme | Aston 2 Theme Format |
| .acb | Adobe Color Book Format |
| .acbl | Adobe Color Book Format |
| .aco | Adobe Photoshop Color Palette And Swatches Format |
| .acrobatsecuritysettings | Adobe Acrobat Security Settings Format |
| .acrodata | Adobe Acrobat Data Format |
| .acv | Adobe Photoshop Colour Curves Format |
| .acw | Microsoft Accessibility Wizard Format |
If you want to associate a file with a new program (e.g. my-file.CH) you have two ways to do it. The first and the easiest one is to right-click on the selected CH file. From the drop-down menu select "Choose default program", then click "Browse" and find the desired program. The whole operation must be confirmed by clicking OK. The second and more difficult to do is associate the CH file extension to the corresponding software in the Windows Registry.
Many files contain only simple text data. It is possible that while opening unknown files (e.g. CH) with a simple text editor like Windows Notepad will allow us to see some of the data encoded in the file. This method allows you to preview the contents of many files, but probably not in such a structure as a program dedicated to support them.
