I've not had this on this tablet, but it happened with my old Asus Slider sometimes. Two options: 1. downloaded from a less than reputable source and the tablet caught a virus. 2. apps with update failure.
Might install a freeware antivirus/malware program like AVG..
Samsung Galaxy Note Pro 12.2 Gatsrom Debloated
HTC One X Team Venom ViperXL