Not sure what this has to do with Downloads.com, but have you tried uninstalling Avira then re-installing it?
I would check on the Avira web site that the free version is still available, and download the installation file first.
Then I would reboot the computer after the uninstall and before the re-install.
Mark
When trying to update Avira antivir I was invited to obtain the premium version free.It required signing up for other free products none of which I wanted. Now I cannot update the basic free version which I have used for sometime because I am unable to close the avira online shop programme. I would appreciate your help please.

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