Aug 04
Problem viewing chm files in vista - navigation to the webpage was canceled
I recently ran into an issue viewing a chm files in vista. Looks like chm files from untrusted sources are blocked by default. There is an easy fix though.
- Right click on the offending chm file
- Click properties
- Click unblock
The help file should open correctly now. If it doesn’t make sure you aren’t opening it from a network location. Chm files do not work on network shares. Just copy it local and follow the steps above.

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June 15th, 2009 at 7:21 pm
thank you, thank you, thank you, that is annoying, good to know its a easy fix
July 27th, 2009 at 11:07 am
Thank you very much,
Solved the problem