Hi Ive setup a win 2003 dc/sp2/dns/dhcp server & also added my isa 2006 member server to the single domain. Due to trying to troubleshoot something else I created a trust between the Domain Controller & the ISA member server, but was told that this was only for joining different domains together. So I decided to remove from the Domain & Trusts, ''incoming - which stated the services were busy, so I decided to take the ISA member server off the domain although I dont know why I did this. I then remove the outgoing trust' but still could not remove the 'incoming trust'. I then joined the ISA member server back to the domain successfully but after the reboot of the ISA member server it accepts my domain logon but states 'the domain is busy'!!! Qns1. Does anyone know how I can resolve this issue ? Thanks! Mikey