Thanks Roadrunner. I tried these settings, but no change. SMTP set to 587 or and my pop3 set to 25 or 995.
Earlier I had tried to run Repair, which ran ok, but failed to solve the problem. Then I uninstalled windows Live Mail, then reinstalled Windows Essentials from Microsoft.
Exactly the same fault still occurs. I am running Windows Home Premium with 64 bit software. This fault only occurred after the upgrade from 32 bit software. I wonder if this is the base of the problem?