I'm using Windows 7. When this happens all the messages on the server get dumped and my other computers which are using the same e-mail accounts don't get their e-mail. Since only my wife and I have access to this computer I know this is not being done by a person. Is there a fix for this problem? To find this button in Windows Live Mail, go to Accounts, Properties, and click on the Advanced tab. The button is at the bottom of the page under Delivery. When I click the button it stays clicked for awhile but invariably after a day or a week or even longer, it shows up unchecked again. I can tell when it has happened because one of my other computers suddenly stops getting any e-mail.

Yesterday I upgraded to Windows Essentials 2012 (and Windows Live Mail 2012) and already this problem has happened again.