File Extension CHM

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    Microsoft Compiled HTML Help Format
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Have you encountered a problem with a CHM file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a CHM file here. In the further part of this page we have added a list of programs that should open your CHM file. It is enough you choose a proper application for your operating system, download and install it.

Programs which can open a CHM file

How to open a CHM file? Advice and guidance

Absolutely most often appearing reason that prevents you from opening the CHM file is the lack of a proper application to support it in your operating system. It is notably the first thing you need to address. When one of the programs to support a CHM file from the list is already installed, you can try to rerun the file. The system should display a message asking you to choose a primary application to support CHM files. At this point we are looking for disk space where the application was installed in and we can link it with a CHM file. Since then, our operating system will use the selected program to support all CHM files.

Other issues

Despite the described problem with CHM there may be many more problems. If the existing operations were not effective, get involved with the following matters:

- verify that the CHM file is not damaged and that it has been downloaded or copied in whole
- verify that the file has a file extension that has not been intentionally changed (for example, if it do not contain other information than its extension suggests)
- make sure again whether the CHM file type is linked in the operating system with a proper program
- make sure that the file is not infected with a virus and you have up to date software and drivers.

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