Posted by & filed under Windows / Server.

Although this particular problem has been around for some time, I am surprised at how many times I am asked about the solution. Many programs use an HTML help system that requires Internet Explorer and ActiveX to run (CHM – Compiled HTML Help). After security updates 896358 and 890175, some HTML content outside of the “local machine” zone was disabled. This would affect many network based programs or programs that connect to an outside server for HELP files. When accessing the Help system, an error saying “Page Cannot Be Displayed” would show up. Luckily the fix is easy.

In Notepad, copy and paste the code you need and name it “htmlhelpfix.reg” Then double-click on the file and click “YES” when it asks if you want to enter it into the registry.

Enable Local Machine, Local Intranet and Trusted Site Zones to display ActiveX HTML Help. This is the most commonly referred to fix – this is probably the one you want. You can also download the zipped htmlhelpfix.reg file here.

REGEDIT4

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x\HHRestrictions]
“MaxAllowedZone”=dword:00000002

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x\ItssRestrictions]
“MaxAllowedZone”=dword:00000002

Enable Local Machine Zones to display ActiveX HTML Help. This is the default entry, you can use it to reset.

REGEDIT4

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x\HHRestrictions]
“MaxAllowedZone”=dword:00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x\ItssRestrictions]
“MaxAllowedZone”=dword:00000000

Enable Local Machine and Local Intranet Zones to display ActiveX HTML Help.

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\ItssRestrictions]
“MaxAllowedZone”=dword:00000001

Enable Local Machine, Local Intranet, Trusted Site and Internet Zones to display ActiveX HTML Help.

REGEDIT4

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x\HHRestrictions]
“MaxAllowedZone”=dword:00000003

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x\ItssRestrictions]
“MaxAllowedZone”=dword:00000003

Enable Local Machine, Local Intranet, Trusted Site, Internet and Restricted Zones to display ActiveX HTML Help. NOT RECOMMENDED!

REGEDIT4

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x\HHRestrictions]
“MaxAllowedZone”=dword:00000004

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x\ItssRestrictions]
“MaxAllowedZone”=dword:00000004

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