How well this may or may not work may depend on where the CHM is when you are opening it. Is it on your local C drive? If not, it needs to be.
Additionally, if you copied it, it's possible that you need to right-click it and choose "Unblock" from the properties sheet.
Thank you for your quick answer.
So the chm file is well on my C drive. I seen there is few weeks when i open it by the network, all the help does not work, not only the research.
After, i don't see in the chm's properties the option 'Unblock'. Is it in the tab general, security or detail?
See my site re CHMs on a network.
On your website, you explain how to make a chm file for a network?
But my target is to have good results after a research and not the error message.
You have a solution for this problem on your site? Because i don't find it.
I am confused by the fact that you have marked Rick's answer as Correct but Post 4 in this thread indicates otherwise.
Regenerate the WebHelp output to a local drive, then run the converter and make sure the output folder for that is local.
See www.grainge.org for RoboHelp and Authoring tips