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CHM Output does not display content
Posted: Tue Jun 25, 2019 10:02 pm
by antoterrence
Hi,
When I run the CHM transformation, the build is successful. The TOC is generated. But the content does not load in the content pane. Instead, the following error is displayed.
Make sure the web address //ieframe.dll/dnserrordiagoff.htm# is correct
I am using Windows 10. One of my colleagues uses Windows 7 and it works for him. Your help will be much appreciated.
Re: CHM Output does not display content
Posted: Wed Jun 26, 2019 9:30 am
by Radu
Hi,
I'm not sure what's wrong, I'm also using Windows 10 and I've had no problems opening CHMs.
Does the same CHM work for your colleague on Windows 7?
I googled a little bit for this:
https://social.technet.microsoft.com/Fo ... nservergen
there seemed to be some security problems when attempting to load a CHM from a shared network drive with Windows 10, problem induced by some kind of Windows update.
Regards,
Radu
Re: CHM Output does not display content
Posted: Wed Jun 26, 2019 3:26 pm
by antoterrence
Yes, it works fine for my colleague. I too read about it. Without identifying the exact cause, I didn't want to attempt to change any settings on my system.
Re: CHM Output does not display content
Posted: Tue Aug 19, 2025 11:24 am
by BennyTordrup
Now 6 years later, I face the came issue.
The CHM file is build locally, there is no Unblock button in properties, but the items in the Contents still display the "Can't reach this page" and have a point to check the correctness of the //ieframe.dll/dnserrordiagoff.htm#.
Re: CHM Output does not display content
Posted: Mon Aug 25, 2025 9:00 am
by Radu
Hi,
Maybe you could have started a new thread for this

CHM as a file format in itself is deprecated and no longer supported by Microsoft, also there is not much official documentation on it.
I do not know what the problem is, did the published CHM work correctly until some moment in time maybe when the DITA XML content in the project was changed in some way? Can you create a small sample DITA project exhibiting the problem?
Regards,
Radu