What is popup_calendar12.exe doing on my computer?
popup_calendar12.exe is a popupcalendar
belonging to PopUp Calendar
from Pourkwapa Software
Non-system processes like popup_calendar12.exe originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues.