Saving .chm files from the web - microsoft support

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

Double-click the .chm file.

In the Open File-Security Warning dialog box, click to clear the Always ask before opening this file check box.

Click Open.

Method 2

Right-click the CHM file, and then click Properties.

Click Unblock.

Double-click the .chm file to open the file.