Setup wizard reports that session support is OFF, but it is ON in php.ini. What is a problem?

Try the following steps:

1. Run setup wizard from the start, click "Cancel" to start it over.
    
2. Make sure cookies are allowed in your browser.

3. Check out your session.save_path variable 
   and make sure directory is writable and have enough space.

   http://php.net/manual/en/session.configuration.php#ini.session.save-path