Odd Fins said:
Hi JefferyD90. I am not aware of any third party software, I haven't added anything, well not intentionally anyway.
Most of the time you didn't know. For example Dell may have put a 3rd party program on your machine to handle it, and then removed Microsoft's own 1st party program, changing the code of Windows to bend to Dell's will. Now you have a HP and HP uses its own thing, or allows Microsoft to do its own thing, and its not the same program controlling the permissions. It happens often. What I SUGGEST doing, is just getting to a folder that you want, copy it, then paste it on your current machine, disconnect the external drive and now try to access your files on your machine.
PS if it tells you "xxx file name is too long" or "xxx is a system file" you do not want to copy these over, just skip them.