Can't "send and receive all" in Mail

When I click "send and receive all" in Windows Mail, I get the error message
error messages is blank.  But it works fine if I click "send all" then

Thanks for the help.

Which antivirus are you using?

Which antivirus are you using?
Windows Mail is not compatible with most McAfee or
Norton security programs. Those will need to be
uninstalled, not just disabled.

After uninstalling your non-compatible antivirus, download
and install a more compatible antivirus like the free Avast:
http://www.avast.com/eng/avast_4_home.html

Even compatible antivirus programs will need to have their
email scanning option turned off. For more on this topic see
http://www.oehelp.com/OETips.aspx#3

Gary VanderMolen