'Anyone who bought ebooks through the Microsoft Store is in for a rude shock in the coming days. The good news? You can get a refund. The bad news? All of your books are going to be deleted this month.

Microsoft announced in April that it would stop selling ebooks and that any books the company already sold would stop working in early July because the DRM servers were being shut off. Yes, you read that correctly. Those books that you “bought” are going to disappear. Even the “free” books that you downloaded through Microsoft will be deleted.'

-- source: https://gizmodo.com/ebooks-purchased-from-microsoft-will-be-deleted-this-mo-...

Possible solution to keep the books - remove the DRM: https://www.techradar.com/news/software/how-to-remove-ebook-drm-with-calibre... https://apprenticealf.wordpress.com/2012/09/10/drm-removal-tools-for-ebooks/ https://apprenticealf.wordpress.com/2011/01/13/ebooks-formats-drm-and-you-%E...

Cheers, Peter