Make use of cookies and set the expiry of the cookie to equal 8 hours. In theory, this should create a cookie every day, therefore the user will only require to logon once a day. -----Original Message----- From: Martin Staiger [mailto:mstaiger@xxxxxxxxxxxxxxxxxxxxxxxx] Sent: Wednesday, July 05, 2006 8:34 PM To: php-windows@xxxxxxxxxxxxx Subject: single sign on dear group, how can we find out, if a user has a valid session on his windows client? We would like to use this session to authenticate in our web-application. Will we need active-x controls? Thanks, Marc -- PHP Windows Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP Windows Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php