How to Fix "Unable to add Google Account into Android apps or Win 8 mail app."

This video will help you solve the issue with connection of apps to google account. unable to add,connect or Sync Google or Gmail Account. windows 8/8.1 mail app, android apps, mobiles apps,computer apps or any other app. How to Fix the error "That email address and password didn't work, Double check them and try again". in Window 8 Mail App, Calender,etc. How to add multiple email accounts in mail app.