WD MYBook cannot access using Windows 10

I have the latest Windows 10 and I am trying to use all of Mybooks to do backups and only one is now recognized and that one says I do not have permisson to remove the old backups even though I entered my password. I have also MyPassbood and it will not work. I need to do a full data backup and my hard drive is dying and some of my files are already corrupted. I tried the older help but they do not work.