I dont know if this is the right forum to post this if not just move it, thanks. How to install Bitdefender Total Security 2015 on Windows 10 Technical Preview How it works - Details: 1.Go to bitdefender.com 2.Download the installer (Online installer - just hit "Try" enter your email). 3.You must have WinRAR >> extract the installer downloaded. 4.(Optional) Copy the folder to Desktop. 5.Run the Command Prompt (Admin). 6.Get to the path of the folder with cd "C:\Users\[user name]\Desktop\bitdefender_tsecurity" 7.Replace [user] whith your user name. 8.Run setupdownloader.exe /silent. 9.Be Patient since it runs in the background to check if it is running go to Task Manager and you should see Background Processes This is not a tutorial by me, just wanting to share it with you guys.