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

Can you think of anything that may have changed/updated on your PC that coincides with this? You mentioned it happened on your husbands PC once, correct? What was running when that happened?

Have you tried completely reinstalling the game? If it only happens with FFXIV, that may be a way to solve it.

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