Okay. We have 2 separate Domain controllers for 2 separate companies. 2 different DNS server but only 1 DHCP server to assign IP for both domain since they are on the same VLAN subnet.
I wasn't able to join the PC to the secondary domain because DHCP server was pointing to domain 1 DNS. So i made a new class called NewClass(with the DNS server from domain 2 and did the following command
ipconfig / setclassid "local area network connection" NewClass and it look like i was able to join the domain. But i am still having problem where in the middle to the joining it would error out "seem it it lost connection to the DNS or something. And when i do a ping. It is not getting the DNS from the DNS server from the second company