Ecco gli errori:

Warning: session_start() [function.session-start]: open(c:/winows/temp\sess_975578ef8a7d0df7f8e498267bb18d6a, O_RDWR) failed: No such file or directory (2) in C:\Inetpub\wwwroot\e\admin\auth.php on line 16

Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at C:\Inetpub\wwwroot\effebi\admin\auth.php:16) in C:\Inetpub\wwwroot\e\admin\auth.php on line 16

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at C:\Inetpub\wwwroot\effebi\admin\auth.php:16) in C:\Inetpub\wwwroot\e\admin\auth.php on line 16

Warning: Unknown: open(c:/winows/temp\sess_975578ef8a7d0df7f8e498267bb18d6a, O_RDWR) failed: No such file or directory (2) in Unknown on line 0

Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (c:/winows/temp) in Unknown on line 0

Da premettere la directory esiste, ho modificato gli \ ma niente.