WHOS-IN Pro CHM (Help File) Problem
PROBLEM: CHM (help) files won't open from Server:
NOTE: This problem is now permanently fixed - Context sensitive help
is now accessed directly from the web site (as of 2008-04a release).
Quick Fix: Copy the ADMIN.CHM and USER.CHM files to your local C: drive. They run fine locally - it's running them across a LAN that is the issue (under XP, Vista, Windows 7 and Windows 8).
NOTE: This problem exhibits different behavior under Windows Vista. The Help file 'loads' and the subject headers are visible, but the individual 'pages' of the help file don't display.
The XP fix (below) MAY not have any effect in Vista (untested here as yet).
From the Microsoft web site:
http://support.microsoft.com/?kbid=896358 mentions about a security patch that prevents downloaded chm files from opening on win2003 server. ... it's been narrowed down that the failure started since 06/20/2005. perhaps an automatic Microsoft security update process
Other related sites describing how microsoft security patches prevent .chm files from opening
If you copy the .chm files to your local c:\ drive (non server computer), you should be able to open them.
A recent Microsoft patch by default will disable the displaying of CHM / HTML Help files which reside on a network share rather than the local machine. To correct this behavior, you can modify the ItssRestrictions 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.
- 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, enter 3, and then click OK.
- 7. Quit Registry Editor.
For more information, check out the microsoft writeup on this issue at:
We are in the process of re-writing all the help files in HTML (all the ADMIN help is completed), and will soon have them ONLINE (here on the web site). This will totally eliminate the need to apply any of the 'fixes' above, however it's a slow process... there are 260+ pages to re-write.