I downloaded Windows 10 four days ago. Since then I cannot open Windows Live Mail and I receive an error code " wlmail.exe - Application Error  0xc000007b " when I try to open my mail.   I uninstalled Windows Live Mail and reinstalled it. I still receive the same error code. I could try resetting my computer, but not sure this is the thing to do or not. Also there is a button under update and security that will reset my computer to Windows 8.1, but not sure if that would solve the problem. What should I do?