A family of Microsoft word processing software products for creating web, email, and print documents.
I did this "turning of Enable Copilot". It does not permanently turn it off. It only turns it off for the document you are working in at the time you disable it. As soon as you open a new document, it appears again. I sure hope MS fixes this quick as it is highly annoying and completely unnecessary. The default should be NO Copilot. Then users who want to use it can turn it on if they wish.
UPDATE: After disabling Copilot in a blank Word document, I completely closed the Word app and then re-opened it. I then opened a new blank word document and Copilot did not appear. So hopefully that is now a permanent shut down of something that was not needed in the first place.
It is permanent until you turn it back on, if you do.
It is also possible that Microsoft will switch it back on, but I doubt that will happen.