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Error accessing CHM Help file

Error accessing CHM Help file

Error accessing CHM Help file

(OP)
I am in an active directory/netware environment. There is a CHM (help) file located on a windows file server. When I try to launch it from one machine, it displays properly. From some other machines, the index comes up but the main pane shows "Page cannot be diplayed" (looks like the IE error page).

I even tried using an account with domian admin priveleges, and it worked on one machine but not the other. Any ideas?

Thanks,
Andrew

RE: Error accessing CHM Help file

We had this problem with NBS Building (a specification writing application for architects.  It is caused by a recent Microsoft update.  We had to do a registry edit to get it working again.  I don't have the details to hand but I can provide more info tomorrow if you need it.  

RE: Error accessing CHM Help file

Let me know if the above does not help.  The other choice is to loosen the restrictions on the Local Lockdown Zone, but I would prefer trying the above linked article method first.

Best regards,
Bill Castner

RE: Error accessing CHM Help file

I also have this problem. I have tried doing the registry edits detailed in the document above but nothing has worked so far. The help files we have a problem with are sitting on a file server in our domain. I'm not sure I'm putting the registry key in correctly.

Here is what I have:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp]

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x]
"EnforcedDirectories"="%WINDIR%;C:\\Program Files\\Movie Maker"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x\HHRestrictions]
"MaxAllowedZone"=dword:00000001
"UrlAllowList"="http://nhfileserver\\saphelp\\Sap46c\\HELPDATA\\EN"

Can anyone spot what might be wrong?

Thanks for any help.

K HARBAUGH

RE: Error accessing CHM Help file

REGEDIT4
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x\HHRestrictions]
"MaxAllowedZone"=dword:00000001
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x\HHRestrictions]
UrlAllowList"="http://www.nhfileserver.com/saphelp/Sap46c/HELPDATA/EN; http://www.nhfilserver.com/"

Notes to the changes above:

. "Windows Registry Editor 5.00" does not always resolve under XP SP2. (Changing to 5.01 does resolve).   Use the REGEDIT4 identification.  

. Note the change in the use of "\\ or //" whether singled or doubled

RE: Error accessing CHM Help file

Just a question for clarification, does it need the www since it is on a local network/intranet? Also, I created the registy key on my WINXP,SP2 machine, using regedt32. How would I get "Windows Registry Editor 5.01"?

Thanks for the help.

KH

RE: Error accessing CHM Help file

Regedit under XP SP2 reports "Windows Registry Editor 5.00"

Which is fine.  There are instances in which "5.01" are returned, and it causes problems for regedit /s filename.reg  but these are rare.  What I wanted you to do is stay with the header REGEDIT4.

"Just a question for clarification, does it need the www " No.

I still think you may have to relax restrictions on the Local Lockdown Zone, but test and see if this is true.



RE: Error accessing CHM Help file

Sorry to seem dumb....

I exported the key from my computer. So, if I change it the way you show, then import it, it should make the change right?

RE: Error accessing CHM Help file

I tried changing my key to what you posted but it still doesn't work.

When I try to open a CHM file it opens the window and I can see the topics on the right pane, but the left pane says "Action Cancelled"

Internet Explorer was unable to link to the Web page you requested. The page might be temporarily unavailable.

--------------------------------------------------------------------------------

Please try the following:

Click the  Refresh button, or try again later.

If you have visited this page previously and you want to view what has been stored on your computer, click File, and then click Work Offline.

For information about offline browsing with Internet Explorer, click the Help menu, and then click Contents and Index.




Internet Explorer  

Any other thoughts?

RE: Error accessing CHM Help file

I went to the website and ran IEFIX. Still no luck. Everything is Enabled in my local Intranet Security Settings.

Thanks for sticking with me!

RE: Error accessing CHM Help file

Another question, is Microsoft working on a fix for this patch? This could be horrendous trying to get it to our entire organization.

RE: Error accessing CHM Help file

This is harder than you may think.

Start with:

Start, Run, regsvr32 c:\windows\system32\hhctrl.ocx

RE: Error accessing CHM Help file

OK

Ran the regsvr32... Same result. Do I need to reboot?

RE: Error accessing CHM Help file

Yes.

RE: Error accessing CHM Help file

Rebooted. No change.

Should I open a call with Microsoft on this?

RE: Error accessing CHM Help file

REGEDIT4
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x\ItssRestrictions]
"MaxAllowedZone"=dword:00000001

This was the registry edit we were given to resolve the problem which is Example 2 in the knowledgebase article http://support.microsoft.com/kb/892675/

The same article also tells you how to deploy the fix using group policies.  

RE: Error accessing CHM Help file

Tightpants,

I covered that registry edit way above.

My concern is whether XP SP2 with all updates will support compiled Help files.  

This is old stuff, and I want to find an affirmative statement yea/neah as to the support.  My guess is not.

RE: Error accessing CHM Help file

I added the additional post because I said I would and it fixed the problem for us, with the CHM files on our local network.  

I think XP SP2 with all updates does not support CHM files unless you re-open the security hole the fix is trying to close.  

RE: Error accessing CHM Help file

Thanks to everyone for their help.

Here is the registry entry that finally fixed the problem:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x]
"EnforcedDirectories"="%WINDIR%;C:\\Program Files\\Movie Maker"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x\HHRestrictions]
"MaxAllowedZone"=dword:00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x\ItssRestrictions]
"MaxAllowedZone"=dword:00000001

We found that you need both the HHRestrictions and the ItssRestrictions for it to work properly.

I think the first entry "Movie Maker" was already there, it just came along when I exported the key.

K Harbaugh

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