"this installation is forbidden by system policy" during installation despite many attempts at a workaround...
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Hi,
I would suggest you to try the steps provided below and check if it helps.
Method 1:
Try to set your computer in Clean Boot state and check if the same issue occurs.
By setting your system in clean boot state helps in identifying if any third party applications or startup items are causing the issue.
How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7:
http://support.microsoft.com/kb/929135
Note: After clean boot troubleshooting step, follow Step 7 in the provided link to return your computer to Normal startup mode.
Method 2: Also try to install a program as an administrator, follow these steps:
- Right-click on the program and you need to install, and then select Run as administrator.
- When you are prompted for an administrator password or for a confirmation, type the administrator password, or click Continue.
Hope this information is helpful.
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See if any of these help.
Fix for “The system administrator has set policies to prevent this installation” error.
http://www.bhcblog.com/2009/03/09/fix-for-the-system-administrator-has-set-policies-to-prevent-this-installation-error/
Windows installer service can not be accessed
http://social.answers.microsoft.com/Forums/en-US/w7programs/thread/c785a860-bd9e-484d-baf1-9b074ac2ffbb
Use the Vista instructions in this to reset to default the security settings.
How do I restore security settings to the default settings?
http://support.microsoft.com/kb/313222/#appliesto
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Error 1625 - This installation is forbidden by system policy. Contact your system administrator. ERROR_INSTALL_PACKAGE_REJECTED
What you say about "How do I restore security settings to the default settings?
http://support.microsoft.com/kb/313222/#appliesto" is a late amendment to that article that I was not aware of so thanks for pointing that out.
Solving setup errors by using the SubInACL tool to repair file and registry permissions
http://blogs.msdn.com/astebner/archive/2006/09/04/solving-setup-errors-by-using-the-subinacl-tool-to-repair-file-and-registry-permissions.aspx
You might not have these Registry Keys on your machine but if they exist are there any "strange" Policies listed in them?
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Policies\Explorer
Sometimes when the Registry gets into a corrupted state (for example by using Registry Cleaners or just by bad luck) the only solution that may be viable is a clean install of Windows. What recovery options come with your machine?
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HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface
Looking at the above Sub-Keys on my machine, wherever Trusted Installer is mentioned (it is not seen in most of the Sub-Keys) it is the only user with Full Control. System, Administrator, and User, only have Read access when the Trusted Installer user is mentioned. All of the Sub-Keys which fail to mention Trusted Installer, give System and Administrators Full Control, with Users having only Read access.
The actual "Interface" Key gives Full Control to System and Administrators, with Read access to Users, there is no mention of Trusted Installer.
I was looking at the main Key and Sub-Keys as a non Admin user (Standard User) and I did not get any Access Denied message, of course I did not look at every Sub-Key as there are too many to check.
Once your Registry is corrupt unfortunately (if you have no Backup) them despite the problems and difficulties, a clean install is often the only solution. I hope your Registry is not corrupt so you can avoid the pain of reinstalling.
Speaking of logs, have you checked the Event Viewer logs?
Working with Vista’s new Event Viewer
http://www.petri.co.il/vista-event-viewer.htm
http://windows.microsoft.com/en-us/windows7/What-information-appears-in-event-logs-Event-Viewer
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I'm running out of ideas to suggest, have you tried a program like this to see what is happening under the hood?
Process Monitor v2.8
http://technet.microsoft.com/en-au/sysinternals/bb896645.aspx
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