The Office package installed on the user's computer is not capable of reading the files that have been uploaded into Confluence.
You'll need to fix the Office installation on the client side. All Confluence does with files is hand them over to the browser, it doesn't do anything "clever" with them that might break it in this way.
Hi team, I’m Avinoam, a product manager on Confluence Cloud, and today I’m really excited to let the Community know that all customers can now try out the new editing experience and see some of the ...
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