Open .CHM chm file

In the File Download dialog box, click Save, and then choose where you want to save the .chm file. Then, use one of the following methods:

Method 1

1. Double-click the .chm file.
2. In the Open File-Security Warning dialog box, click to clear the Always ask before opening this file check box.
3. Click Open.

Method 2

1. Right-click the CHM file, and then click Properties.
2. Click Unblock.
3. Double-click the .chm file to open the file.