All you are doing is forcing a specific web page with a specific browser, that really isn't an test of the effectiveness/stability of your installation onto their hardware. Apart from that, I'm not naive, If you were simply checking functionality on a one time only basis why have you set it as their start page too? Additionally, I see no reason to force flashplayer and MSE on every customer either, (if someone requires flash they will be given the opportunity to install it from most sites using it, and MSE is not everyone's choice, only yours, some may prefer a full security suite or free products from companies like BitDefender or AVIRA. BTW, if you wish to receive a response to your question, you'd be more likely to get your wish if you provided a reasonably detailed explanation on which method(s) of installation you are using with each specific Operating System. Most of my customers are around 50 years old and just want antivirus I set the homepage to my company facebook just so they can get updates they are free to change anything they wish. I just do that by default. I use a new windows installation and key for each install.