After working normally for hours or days, Windows Live Mail displays a dialog box "Logon - Charter (gothic63)"  "Please enter your user name and password for the following server."  I confirm the User Name and Password, click OK, and the dialog box disappears and reappears.  This will happen several times.  When I hit Cancel, a dialog box "Windows Live Mail" appears with the message "Some errors occurred while processing the requested tasks.  Please review the list of errors below for more details.  Unable to send or receive messages for the Charter (gothic63) account.  An incorrect password was entered.  The next time you send or receive messages, you'll be asked to enter your user name and password for the account."

The only way I have found to restore the Live Mail service is to uninstall and reinstall the program.
Any suggestions?
bernard.