Help with retrieving with my passport ultra

Hi! I just put all of my pictures and documents from my old laptop on to my passport ultra. I am able to retrieve everything from it back on to the computer. When I plug it in to my new laptop, I cannot retrieve anything. It is all listed as being there but everything has a striketrough and tells me I don’t have security access to retrieve anything. I am not understanding and can’t figure out why this is happening? Help! :) 

I also have this issue.  After I retrieved my files, I can see  my files but my computer tells me I need administrative rights to open the docs.  I am using Windows 8

My old computer is windows 7 and my new is windows 8 so I was wondering if maybe that was the problem…