Signature update connect issue

Just installed CIS on a Win7 system. When it attempts to update the virus database, it gets to 2.5% then aborts with an error message of 80072efd - connection to server cannot be established.
The host portion of the update section shows the following link as the download site:
and it is active.
I can ping that address successfully. And I can search the web with Firefox while CIS is installed.
I’ve tried safe mode and training mode for the firewall section.
And I’ve restarted computer and done a uninstalled > reinstalled the software numerous times.
Also I’ve selected to both install with Comodo DNS enabled and also without Comodo DNS enables. No diff.
My computer is behind a router.

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