A family of Microsoft word processing software products for creating web, email, and print documents.
Not sure if anyone has posted a solution as I haven't read ALL the comments but the following worked for me:
Right click file that is in read-only
Properties
Un-select "Read-only"
open "Advanced"
Un-select "File is ready for archiving"
Apply and Okay.
Was then able to open the document, edit and save normally.