I found, unfortunately, that Windows Live Mail from Windows Essentials2012 did not start. It turned 15 seconds and then disappeared. Same is with Windows Live Mail from Windows Live 2011. Windows is Windows 8 OEM.
I deinstalled Avast. Windows Live Mail works flawlessly. Iwent to Windows Defender as a virus protection for a while, and then to another product. In addition, with those alternatives my computer starts up quicker.
(As a side detail, I went away from Windows Defender because it blocked legitimate applications, it scanned and quarantined Volume System Information contents and its allow feature did forgot quickly the allowed applications. All of this was not desirable.)
Peter