I know very little about websphere, but I'm desperate for help. We are running version 4.01. After years of running ok on an IBM SP running AIX 433, one application server won't now start. The tracefile shows JSAS0170E 'Null session handle in session table' and recommends checking client user name password is ok. Thing is, I don't know where the client user name/password details are held to check - or even if it's a unix user name.