My Windows Update was working fine up until about two weeks ago. Two weeks ago my Kaspersky ran out and I switched over to Bit Defender. I am trying to install a new program and get the message that my Net Framework needs to be updated, there is a current Net Framework 4.0 update but it won't download. I ran the troubleshooter and tried many other things to get Windows update working. I get the message "Windows cannot search for new updates" code 80080005. My most recent check for updates was on 8/20/2013. Checking my update history I had numerous updates up until 9/10/2013, I was also able to download one two days ago, but there are two more and they will not download. I might add that the numerous updates until 9/10/2013 were all installed successfully, and it was not until I installed Bit Defender that I cannot use Windows Update.