HI there,
Thank you for your quick answer.
I checked my configuration and everything seems to be ok
At the same time, I restaured my computer .. and with the Avast Pro it's working fine. So I uninstalled it manually and I reinstalled Avast! Internet Security.
When I open Windows Live Mail, everything is working. I can check my emails and they come in.
But as soon as I push the "reply" button, Windows live mail shuts down.
I check also the Windows 7 Firewall and it is turned off.
If you have any other idea you would make me very happy
Thank you for your help
Paolo