I have verified that QB is the latest release.

Webmail settings: I have checked off Webmail. We use comcast for email provider.  Have verified that settings are correct.  This is the setting we were using before this recent hardware/operating system upgrade and it worked fine.

Oddly enough, Comcast uses Outlook.  So instead of using the Webmail option, I try to use Outlook/Outlook Express option.  However, as I said initially, it brings up an error box that says "Install Outlook Client on your system to use this option".  Outlook IS installed on my system and is working fine by itself.  How would I separately install an "OUTLOOK CLIENT" that QB can see??