Addendum: It's part of the XBox game bar. In case you are wondering where your recordings are, press Win+G.
It didn't work for me the first time - I had to open the game bar first. Also, I had to focus a Window. I cannot record the full desktop with this technique, so it's not quite the same as the linked application.
It didn't work for me the first time - I had to open the game bar first. Also, I had to focus a Window. I cannot record the full desktop with this technique, so it's not quite the same as the linked application.