Go to your RoboHelp install location:
RoboHelp 2015:
<Drive>:\Program Files (x86)\Adobe\Adobe RoboHelp 2015\RoboHTML\WebHelp5Ext\
RoboHelp 11:
<Drive>:\Program Files (x86)\Adobe\Adobe RoboHelp 11\RoboHTML\WebHelp5Ext\
When a user invokes context-sensitive help from an application, the user is not directed to the specific help topic. All context-sensitive help calls are redirected to the default help topic. This happens if the WebHelp opens in Firefox v41.0.1.
To resolve this issue, do the following:
Go to your RoboHelp install location:
RoboHelp 2015:
<Drive>:\Program Files (x86)\Adobe\Adobe RoboHelp 2015\RoboHTML\WebHelp5Ext\
RoboHelp 11:
<Drive>:\Program Files (x86)\Adobe\Adobe RoboHelp 11\RoboHTML\WebHelp5Ext\
Take backup of the following files:
Extract the contents from the attached archive.
Download
The archive contains the following folders:
Copy the extracted folders and paste in the directory specified in step 1.
When you are prompted, click Yes to merge these folders with the existing folders
Regenerate WebHelp.