Wednesday, December 29, 2010

Installation Issues

Code On Time generator is a Windows application that hosts an Internet Explorer web browser within the boundaries of the main window. The code generator navigates to the HTML files stored locally on the hard drive of your computer. HTML files provide interactive user interface of the code generator based on JavaScript. No information is transmitted over the web to our server when you generate your applications. The input and output files of the code generator are stored entirely on your computer.

In a few instances there were reports of the code generator displaying a blank page with Code On Time logo at the top when the generator starts. No other user interface elements were present. Re-installation of the code generator would not help.

The issue has to do with the security settings of Internet Explorer.

Background

Internet Explorer allows controlling if execution of the JavaScript embedded into HTML pages is allowed.

The computer has five security zones,  namely:

(0) Local Machine zone,  
(1) Internet,  
(2) Local intranet,
(3) Trusted sites, and
(4) Restricted sites.

However the Internet Explorer user interface allows users to configure only 4 of the 5 security zones using the Internet Explorer interface.

The Local Machine zone (0), is an implicit zone that exists on the local computer, security settings for this zone cannot be configured using the Internet Options Control Panel.

Any configuration done from the Internet Explorer interface have absolutely no effect on enabling scripts to run within Windows Applications on the local computer (a matter which also affects Code On Time code generator).

Steps to Reproduce

If you save the emphasized text below to the file named "Steps to reproduce.reg" and double-click the file to add the file entries to the registry then the script execution in the Local Machine Zone will become disabled. DO NOT DO THAT !!!Winking smile 

REGEDIT4
 
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0]
 
"1200"=dword:00000000
"1201"=dword:00000001
"1400"=dword:00000000
"1406"=dword:00000000
"1C00"=hex:00,00,02,00
 
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings]
 
"Security_HKLM_only"=dword:00000001

Steps to Rectify

If you save the emphasized text presented below to the file "Script Permissions Fix.reg"  and double-click the file to add the file entries to the registry then the script execution in the Local Machine Zone will be allowed. Code On Time generator will start functioning correctly.  

REGEDIT4
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0]
"1400"=dword:00000003
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings]
"Security_HKLM_only"=dword:00000001

References

http://support.microsoft.com/kb/833633

This information has been provided courtesy of Gabriel Inya-Agha of Quickening Group.

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