WIN7 opens the .CHM file prompt "has been canceled to the page navigation"

Today downloaded a CHM tutorial
file on a website, dozens of M, pulled down and double-clicked to open it to my face: Only the directory, the right content area shows “ has been canceled to the page navigation & rdquo;, smashed.

WIN7 installation has been used for so long, I seem to open the CHM file for the first time, I remember that the XP era was OK, wondering.

Trying a few times, the inexplicable way to solve it:

1. Right click on the CHM file, select and click on “open mode”

2. Then look Figure operation

3. Then pop up a window, it is still looking at the picture operation, but can not pop up this window after setting, so I have to express it: the bottom left of the pop-up window The option "Always prompt this message before opening", remove the tick, then click “ open & rdquo;

This will solve it, 囧~