You probably need 3 seconds only to fix the CHM content display error on Windows 7 that said “Navigation to the webpage was canceled”?
The “silent” screencast (below) takes half a minute for demo, but the real solution just requires few mouse-clicks :-)
Trick to solve Windows 7 CHM error
If there is no content displayed except the “Navigation to the webpage was canceled” message:
1) Right click the CHM file and select Properties.
2) In the General tab, click the Unblock button:

3) Click OK button and open the CHM file in question again – the content should be displayed now. Good luck.


The “silent” screencast (below) takes half a minute for demo, but the real solution just requires few mouse-clicks :-)
CHM (Microsoft Compiled HTML Help) is a proprietary help file format developed by Microsoft to replace WinHelp format and is commonly used for creating e-book as well.
Trick to solve Windows 7 CHM error
If there is no content displayed except the “Navigation to the webpage was canceled” message:
1) Right click the CHM file and select Properties.
2) In the General tab, click the Unblock button:

3) Click OK button and open the CHM file in question again – the content should be displayed now. Good luck.


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2013 •
OMG! Just know there is another trick that needs less mouse-clicks!
Just uncheck “always as before opening this file” during open the file :-)