Important: Chm files can only be opened from a local machine and not from a network location.

Issue

When opening a chm file a “Navigation to the webpage was canceled” error might occur when the chm was copied locally from a network location. The following error message relates to this issue:

Workaround

  1. Copy the help documentation to the local machine
  2. Right-click on the chm file
  3. Click on Properties
  4. The following screen will be displayed:
  5.  
  6. On the General tab click on Unblock
  7. Click OK
  8. The chm will now display correctly