I am preparing to migrate our OLD 2003 Windows Server to a Windows 2012r2 Server. I have discovered we actually have a 2000 forest, not 2003. To put a Windows 2012r2 server member on the domain it must have a 2003 or greater forest.
So my question now is --- can I upgrade the active directory forest level from 2000 to 2003 while the domain is in use? Note: Nobody will be adding users or computers during this, just accessing the domain.
Of your I expect the answer is Yes but I have never done this before and my boss would not like it if I messed up our domain.