.chm display problem

[XPect]

I've searched the forum, and don't find the solution to my problem.

After an unattended install, everything works except the help files display.

When I try to open a .chm file, the file open right, I can see the summary but the pages are not displayed, just like a page non available in ie.

This probably come from a service disabled or a tweak in registry, but I've not find it yet.

Is someone know where this come from ?

[MHz]

Internet Explorer engine handles the showing of .chm files. Maybe some related regtweak or something close with IE has caused this?