aaarrrg, i am getting crazy about the issue.
I made some package (2) which could only be installed on Windows 7 oS.
SO in the package information, i choose the prerequisite query with all Windows 7 computers.
WHen i want to install this package for a computer X which is in the Query of WIndows 7 it keeps saying this message "The Machine Failed the prerequisite query".
When i recreate the package with another name, it works.
So i really remaing blocking on the old query.
What can i do ?
I already let the package change of prerequisite query but still, it remains.