Hi all I'm trying to view a chm file stored on the network but I fail to that getting the error "Navigation to the web page was canceled". I'm using Windows 7 x64. I know that I had this problem in Windows XP SP 2 but I found the workaround immediately at that time. I have also searched this time but I couldn't solve the problem. I have modified some registries, I have made the same modification in the x64 part of registry accordingly to an article found on microsoft.com regarding registry in windows 7 x64, and so on. Nothing worked. Does anybody knows the RIGHT answer? Thank you!

Hi, There are some reason caused .chm files cannot open: 1. HTML Help (CHM) Viewer Component Is Not Registered 2. Your CHM File Has the "#" Hash Character in the Filename or in the Directory Name. 3. Your CHM is Blocked by a Security Update for Windows XP or Vista 4. Your CHM File is in a Restricted Internet Zone You can refer: Why My CHM File is not Displayed Correctly To troubleshoot your issue, you can try download the .chm file to your computer first, right-mouse click it in Windows Explorer and select Properties. Then click Unblock. These links maybe helpful to you: http://social.msdn.microsoft.com/Forums/en/devdocs/thread/ef2b95e0-4198-4e1a-b876-314a23348b5e http://digitalpbk.com/2009/11/chm-files-navigation-webpage-was-cancelled Please Note: Since the website is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information. Hope it helps. Regards, Leo HuangPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Thank you for your answer but unfortunately it doesn't help. To be honest, I wasn't expecting a solution, this is still Microsoft, I can't get answers or good products from it. For example, I have opened a topic on a linux forum and after a half of hour I had the first answer, next day I had the solution... . I had already specified that I'm using Windows 7 x64 and I have tried the trick with the registry change. It didn't and it still doesn't work. I there any developer from Microsoft that could give an answer... a good one? Thank you in advance!

I had the same problem I tried everything specified in the support. My folder name that has these .CHM files has "#" that was the reason for me. Just to update so that this might help someone in future .

Thanks Leo, Properties> Unblock solved it for me. (Win 7 64bit)