Well I cant answer this one either from the research I have done I do not think it is a windows access problem. From what I have been able to find out which is basically not much it is most likely a Java problem. What version or version's of java are installed on your machine. Have you tried installing Java using the off line installer. Have you tried installing Java then deleting the Java folder then reinstalling it using the off line installer. I do not know that any of these things will help but you might want to give them a try.
You can get Java at the link below.
http://www.java.com/en/download/manual.jsp