Just had this come up from a client who got a new pc (windows 10). i checked if the ""MS Sans Serif Regular"" (not ""Microsoft Sans Serif Regular"") font was installed and it wasn't. Copied it over from my windows 8 machine, installed it, then launched sales order entry and the font was back to normal. Also, I did not have to mess with resolution, DPI, or display scaling. I've attached the font file as well.