hi K_Kasam,   If the Lenovo is able to get IP address on another network, then please check if the current DHCP server has enough pool of IP address.    Regards Vibhor Sahni ... View more

Hi Gregpi,   You have mentioned "sudden alot of our users are having issues'. Does that mean other users are working fine with same password? If not, I would first try changing the password and test.   Next in order to rule out device specific issue, I will test by creating a test SSID without password and connect, to confirm whether or not there is any device specific issue. ... View more