Good afternoon and thank you for posting on the Final Fantasy XIV Technical Support Forums.

These files are located in the My Documents folder (Specifically My Documents > My Games > Final Fantasy XIV). If the update changed a lot of Windows settings, it may have done something to the My Documents folder as well. Check for that Final Fantasy XIV folder and see when it was created or modified (or if there is more than one with a different name).

If you can't find that original folder, you may need to reset all of the settings from scratch, unfortunately. As the other poster mentioned, you can sync that folder with the server to recover them in the future.

We hope we can be of assistance in helping you enjoy the exciting world of Final Fantasy XIV!