Unable to use Many Famous apps due to "Unfortunately ... Has Stopped" error

I am unable to use any Famous Apps like - Gmail, Whatsapp, PayTM, Calendar, Antivirus apps, ram cleaner and many more apps Except few apps such as android chrome. As soon as I am opening these apps then I am getting error "Unfortunately Whatsapp has stopped" OR "Unfortunately Gmail has stopped". I am getting this problem from yesterday. What I have tried:- 1) Factory reset 2) clear cache of gmail/play store/Google services. 3) Using updated version of play store/Google service/gmail/whatsapp/PayTM etc apps. But unable to get solution till now. Anyone help me in this serious matter ? Device details:- Micromax canvas nitro a311, Kitkat