When attempting to open a Compiled HTML Help (.CHM) file on Windows Vista or Windows 7, the file may open but display one of the following messages instead of the expected content:
- Navigation to the webpage was canceled.
- Action canceled.
To resolve this issue, carry out the following steps:
- Right-click the .CHM file and choose Properties
- On the General tab, click the button labeled "Unblock"
- Click OK
Article ID: 2021383 - Last Review: Mar 23, 2010 - Revision: 1