Did you build your e-book library through the Microsoft Store? You'll need to make a change in plans. Microsoft has not only removed books from its online portal, but plans to remove access to existing purchases and rentals in early July. It's not a complete loss when Microsoft plans to offer refunds in the form of store credit, including $25 extra if you've made annotations before April 2nd. However, that still leaves you paying to re-stock your library through a third-party service -- and any notes you've made will disappear into the ether.