A family of Microsoft word processing software products for creating web, email, and print documents.
Thanks to the article at https://www.askwoody.com/newsletter/getting-started-with-winget/#public-defender that I just got around to reading, I noticed that there's another way to get an empty box to change to a box with an X in it.
Type the letter o and apply the Wingdings font to it. The result is an empty box:
Select the box character and type the letter x, replacing the o. The result is
The boxes are not quite the same size, but it's barely noticeable.
Select the x and type the letter o to return to an empty box.