Every one may already know this, but this is the bummer that I got myself into. With out thinking I right clicked on Windows Live Mail Icon and choose "Always stay in sandbox". As a result I have spent three days trying to find out what happened to all my email contacts and why I could not send, reply, or forward any email. Also could receive mail, but could not open any attachments.
I have it all straighted out now. As embarrassed as I am, I though I should pass this little nugget along to the masses.
Ray