This is a tough one...NT 4.0 network with w9* clients. Receiving error 1015...unable to update configuration from \\server\netlogon\config.pol the registry is corrupt... OR error 1016...an I\O operation initiated by the registry failed unrecoverably.... I believe the config.pol file may be corrupt and has corrupted the registries of the clients. anyone know where to edit the registry on win9* machines? i DO NOT want to re-install windows on all the clients. any ideas at all would help, i've been trying to figure this one out for a week and it's getting worse. would overwriting the config.pol file on the NT box help? I'm pulling my hair out here.