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Scada Install Lopping on Windows Installer Coordinator

Issue
Scada installer is stuck with a looping Windows Installer Coordinator. 

Product
Scada 7.4
Scada 8.x

Environment
Installation

Cause
In 2008 R2 a new feature was added called Windows Installer Coordinator. This service will then queue all the installers in order, it apparently has a fatal flaw.
If you have a "nested" MSI, you end up never being able to install. 

Resolution

Desktop Session Host allows multiple installs to be in process at the same time by queuing the installs. 
Windows Installer queuing behavior is controlled by a System Group Policy called "Windows Installer RDS Compatibility".
When the Remote Desktop Session Host is enabled, by default, the Group Policy for the "Windows Installer RDS Compatibility" is enabled.
When the "Windows Installer RDS Compatibility", is disabled the chained MSI is able to run.

To disable this group policy:
1) Log on to the system with a User that has Administrative Privileges
2) Open the Windows Control Panel
3) Perform a search for Group Policy
4) The search results should display a link to the "Local Group Policy Editor"
5) Once inside the editor, go to:
Computer Configuration->Administrative Templates->Windows Components->Remote Desktop Services->Remote Desktop Session Host->Application Compatibility
6) In the right pane, right click on 'Turn off Windows Installer RDS Compatibility" and select Edit from the drop down menu
7) Select the Radio Button labeled 'Enable'
8) Click OK


 
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