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 Enabling online help across a network
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United Kingdom
456 Posts

Posted - 19 Nov 2009 :  14:16:51  Show Profile  Visit DavidM's Homepage
If you have installed software on a network drive and run it from there, when you press F1 to get online help you may well find that you just get an 'Action canceled' message instead of the expected help page.

This is the result of a Microsoft security change that was introduced in one of their security updates a while ago. The reason its behaviour is strapped down is because the help is html-based, which means it could contain scripts, which are in theory a potential security risk.

However, there are ways to change the settings to enable Help to work again. The relevant Microsoft article is here:
but if you don't want to read the whole explanation then we find the simplest thing is to make this small change to the system Registry:

- under HKEY_LOCAL_MACHINE\Software\Microsoft\HTMLHelp
- add or open the key 1.x
- under that key, add or open the key ItssRestrictions
- under that key, add a DWORD value called MaxAllowedZone
- set its value to 2

You can see what this should look like by cross-checking with the Microsoft article, which also explains what the values of MaxAllowedZone mean. The value 2 we have chosen allows it to work on the local machine, the local intranet zone (your own network) and 'trusted sites' (in Internet Explorer-speak).

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