When questioned on the official page at Bitdefender support there is only a huge silence. If you so looking on the net and come across the postings of users in the Bitdefender forums, one sees that one is not alone with the problem. The company sells software that does not even work. Bitdefender is a Mafia Laden. Stay away from products!
Edit: If you simply looks at the first posts to Bitdefender 2013 on the official forums one sees only that A.) people get upset because nothing works incredibly B.) requests to the support people, because the product does not work to install, but for days no answer:
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For days and weeks either no response from the support or only unnecessary comments. Actually, so is likely a software on Amazon not even be sold.
Update:
Meanwhile you can see the Bitdefender 2013 products and Windows 8 install. Bitdefender has uploaded new versions of the installer - has taken a long time but pretty and although since release stood "Windows 8 ready". The review with 1 star is because this product should not have come on the market. But if I am doing already: the misrecognition of viruses / malicious software is quite high. One of the automatic updates that should be imported under Windows has been detected by Bitdefender as a virus and blocking - na good night, you can not even install updates from Microsoft.