Answer:
I'm found on Windows yet I am just a decoration. What am I?
I am always coming but I never arrive. What am I?
I am heavy forward, but backward I'm not. What am I?
The more of me you take, the more I appear behind you. What am I?
I have branches but no fruit trunk or leaves. What am I?
I am free the first time and second time but the third time is going to cost you money.