I had purchased the attached ebook previously. I recently changed my operating system from Windows XP to Windows 7. So I also migrat ed My Digital Editions folder using Microsoft Windows Easy Transfer program. Now after restoring it on Windows 7 when I try to open my any ebook I get the error "Document is licensed for a different user account". I did not authorize digital editions with adobe id at the time of purchasing ebooks, Please help me resolve this error.