Click on the 'Star' files (you can select as many as you wish, then do a right-click on one of them.
You will then be presented with an option to 'Open with' and choose application. Choose Word and all the icons should change to Word.
Surface Pro (2017) vs Surface Pro 4
Where HTML5 is headed next
MacBook Pro v Surface Pro 5
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.