Shoutbox

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Shane Wittstruck - 08-29-2005 05:21:11 GMT +2
On Windows XP (with the security update applied) you can also simply right-click on the CHM file, select Properties, and click on the "Unblock" button. Click "Apply" and the content should be visible.

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After some fiddling around and searching online to no avail (Microsoft identified the problem but offered no solution) I found out that the reason for the problem was because there was a hash ( # ) in my file path. The files that were not working were in a folder called "c#"; and the hash in the directory name was causing problems. The problem arises when there is a hash in any part of the directory path to the CHM file. The problems seems to arise because the hash character signifies an anchor in HTML so the CHM file is getting a bit confused as to where to look for the content.

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To modify the ItssRestrictions registry entry to enable a specific security zone, follow these steps:

1. Click Start, click Run, type regedit, and then click OK.
2. Locate and then click the following subkey:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x\ItssRestrictions
Note If this registry subkey does not exist, create it by using Steps 2a and 2b in Method 1.
3. Right-click the ItssRestrictions subkey, point to New, and then click DWORD Value.
4. Type MaxAllowedZone, and then press ENTER.
5. Right-click the MaxAllowedZone value, and then click Modify.
6. In the Value data box, type 1, and then click OK.
7. Quit Registry Editor.

Now try to open the CHM.

Value Setting
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0 My Computer
1 Local Intranet Zone
2 Trusted sites Zone
3 Internet Zone
4 Restricted Sites Zone

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