Redirection problem during Installation

Hi all,
I have a problem installing OJS 3 in last stable version.
I have unziped it and transfered it on my server (1and1 provider).

But when i connect to the we address :
I have only an error of firefox : the page is not properly redirected…
Nothing more.

I don’t find anything with this problem… Could you help me ?

Best regards.

The address of the error is : /ojs/index.php/index/install

/ojs is my install address