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The Windows operating system considers .CHM files downloaded from the Internet to be a security risk, and blocks them from running any scripts or displaying any page content. If your .CHM file does not load any help pages into the main content panel, you may need to unblock it. To unblock your .CHM file: 1. Find the file in Windows Explorer. 2. Right-click the file and select "Properties" from the contextual menu. 3. On the General tab, click the "Unblock" button. 4. Re-open the file. If the "Unblock" button does not appear, or if the file still does not show any content: - Ensure that there are no special characters anywhere in the path and file name of the .CHM file. The # and . characters are known to prevent CHM files from displaying correctly - Ensure that you are not trying to open the file from a network location or shared folder. Move it to a location on your computer.