Just got this error the other day while working on a friend’s computer. I tried all the suggestions from here: http://www.appdeploy.com/messageboards/tm.asp?m=8872&mpage=1 but to no avail.
What finally worked was downloading and and re-installing Windows Installer 4.5. Here is the link to the download page: http://www.microsoft.com/downloads/details.aspx?familyid=5A58B56F-60B6-4412-95B9-54D056D6F9F4&displaylang=en. I hope that can help some of you.Technorati Tags: computers
Another quick fix for “The system administrator has set policies to prevent this installation” error