7/3/2023 0 Comments Cant read chm help fileHere it helps to rename the folder(s) or to move the file. This is caused by certain characters in the folder path, e.g. Then the CHM file is opened normally, but instead of the content only a “No access to page” appears. To use the file after the download, go to the properties of the file and activate the sub-item “Allow”:Īnother problem occurs when the file is in the wrong path. In Windows OS, some CHM files can not be displayed, while open a CHM file, you will get a message like Cannot open the file or Navigation to the webpage was. The user can unpack it after the download and use the CHM file normally. If you want to offer CHM files for download yourself, you should offer them as ZIP archives. Click Start, Run and enter REGEDIT Go to: HKEY CLASSES ROOTchm.fileshellopencommand. A message appears when the CHM file is started.ĭespite confirmation of the message, the content remains white. Its possible your CHM file association is corrupt. The problem may also occur if the CHM file was downloaded from the Internet. CHM file was downloaded from the Internet Now create a DWORD value with the name MaxAllowedZone Value 1.Īs soon as the key exists, CHM files can also be used from the network drive. chm file, you need first to unblock the file in the properties of your file (first, got to Properties by right-clicking on the file > go to the General tab >. For this you create a key with the name ItssRestrictions in the registry under Computer\HKEY_LOCAL_MACHINE_SOFTWARE\Microsoft\HTMLHelp\1.x\. In order to be able to use CHM files from the network, an intervention in the registry is necessary. The solution is simple: copy the CHM file to your local hard drive and open it from there. User Configuration>Administrative Templates>Windows Components>Attachment Manager>Inclusion list for moderate risk file types with. You just get a 'Cant navigate to this web page' message. If you open the CHM file from a network drive, it is displayed as shown in the screenshot. Some XP security patch wont let us access the help files across the network. This is due to Windows security settings or a “wrong” location. The navigation tree with the contents is displayed, but the main view is not visible. When the user clicks on the hyperlink the target topic it will now be displayed in an external window in HTML Help, with all the settings defined for the window type in step 1.What to do if CHM files are not displayed correctly in Windows? Common causes of display errors.Īn erroneous representation usually expresses itself in this way: When you create a hyperlink to a topic specify the secondary help window type with the Window: setting in the link definition. Open or create (if it does not exists) the key: In the new key, add a new DWORD subkey named MaxAllowedZone and set one of the following values. In the HTML Help Options tab activate the option Links to secondary help windows open a new help window.ģ. Sometimes unregistered HTML Help viewer component can also cause this problem, try to register it by running the command in command prompt regsvr32 hhctrl.ocx. in the help window definition's HTML Help Options tab.Ģ. Right click on the CHM file you’ve saved earlier, select Properties on the General tab and click Unblock button. In the Project Explorer go to Configuration > Microsoft HTML Help > Help Windows and create at least one secondary help window type definition with Add.Īdjust the settings of the window definition as you want the external window to appear – in addition to the size and position you may want to switch off navigation controls etc. It does not work when linking to topics in another CHM file. You cannot link open topics from other CHM files in external windows.ĭue to restrictions in the Microsoft HTML Help CHM viewer, you can only display topics from the current CHM file in an external window. You cannot directly associate a help window type with an individual topic and you cannot set a topic in the TOC to open in an external window when you click on its TOC entry. Important: Help window types can only be used in hyperlinks. Topics can only be displayed in external windows in HTML Help CHM files and the help window settings have no effect in other help formats. In HTML Help you can use additional help window definitions to display topics in external windows when they are opened with hyperlinks.
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