Compiled HTML Help (*.CHM) is a common output format for DOC xPress users when generating documentation. Its portability and search capability make it user-friendly. However, it is older technology that has some limitations on modern operating systems. One example of this is a CHM file where no information is being displayed despite navigating in the menu tree.
Here are the two most common reasons that a user cannot open and view a CHM file.
- The CHM file was generated on another machine. Windows has a security protocol that “blocks” CHM files that were created elsewhere, due to potential security concerns. You must locate the file in Windows Explorer, right-click on the file, go to Properties, and choose to “Unblock” it before opening.
The CHM file is located on a network path. Again, Windows’ security is the cause. You must download the CHM file to your local machine and “Unblock” it in the same manner as example 1 to view the contents.
Once you have Unblocked the file, you will be able to view its contents.