Forum Discussion
Can One Azure VNet support 2 different AD Forest?
Is it Possible to have 2 different AD forest part of same Azure VNet? Example: Current Onpremise Domain controllers: domain controller 1: https://abc.com/ domain contoller 2: https://...
You can run two forests in a single VNET but you need to use your DC's as DNS. When a DC in a domain starts it uses DNS to find all the DC in the domain. If you are using a single DNS like Azure DNS to manage your vnet names, then one forest will not work correctly.
Best to set the DNS manually on the VM's NICs.