Hello, I recently sent a ticket no. 2016052606330002 with the very same topic. Also, I only lately found out that the support tickets are still not working, so I decided to open up this thread.
Apart from being generally useful, Bitdefender Antivirus 2016 is making each Windows 10 new build update to fail during instalation. I tried a few methods to force update, yet they kept failing one after one. Only after deinstalling your program completely - update actually came through. How is that? I'm not about to stop using your antivirus but it's kind of painful to uninstall it each time a new build for Windows 10 is released.
Cheers and thanks for any help.