Could you please try the below steps and let us know the status ;
Click on start – click on start search and type drivers
From the new window open the folders - etc
From here right click on Host and select Open with – Choose Notepad to open the file
In this Host file the last line should be 127.0.0.1 local host , anything below that could be removed and save the host file accordingly.
Please try to access http://us.mcafee.com and try to redownload the programs . If you still encounter the same problem , please follow the document from here http://service.mcafee.com/FAQDocument.aspx?lc=1033&id=TS100411 and try downloading ;