Technote Details :: Can't open CHM file/ CHM topics are blank
Issue
After opening a CHM documentation file, a topic may not appear when you click a link from the Table of Contents. Also, when you try to use a Universal Naming Convention (UNC) path to open a .CHM file that exists on a network shared folder, topics in the .chm file may not appear.

Reason
You are using Microsoft Windows XP and have installed Security Update 896358 from Microsoft, which prevents the features of some web applications to work properly.
Solution
Please read and follow the instructions under Method 2 described in this technical note from the Microsoft Knowledge Base. You will need to perform some changes to your registry.
Caution: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. InterAKT Online cannot be held responsible for any damages you may cause to your system by using the Registry Editor. You are on your own risk.