SubInACL

http://blogs.msdn.com/b/astebner/archive/2006/09/04/739820.aspx

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When is SubInACL useful

I have found that the SubInACL tool is most useful when a setup package fails with error code 5 or 0x5 or 0x80070005. All of these error codes mean Access Denied, and this type of error code is often caused by missing ACLs for the Administrators group or the built-in System account. The Windows Installer service runs with System account permissions in most cases. If the System account does not have sufficient permissions to access the file system or parts of the registry, an MSI-based setup package will fail with an Access Denied error.

SubInACL can also help resolve Internet Explorer script errors caused by incorrect access control permissions for specific user accounts on the system.