I would suggest you both read THIS POST FIRST
Did it, of course. I did something wrong in my first post? Maybe I should have used code style to post the log from windows console, otherwise I don't know what I did wrong :o
Thanks for the answer anyway.
The computer is new.
I took the zip Arduino IDE and unzipped it.
I have Eclipse IDE on my PC.
I didn't change sketches location, because Arduino IDE don't starts.
I created the portable folder by hand, the IDE still don't starts and portable folder is not populated.
Maybe it's not working because I don't have admin rights on the computer and the IDE is trying to create some folders in forbidden places...I will check it on another computer where I have admin rights.