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Active directory & NT 4

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by g_medley

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What are the implications of installing active directory on a member server connected to an NT 4 domain?

6 replies

by brazda.jiri

There are two ways how to implement AD.

First is to upgrade existing domain. Steps are following:
1. upgrade PDC
2. upgrade BDC(s)
3. after upgrading all BDCs, switch from mixed mode to native mode

Second is to build new domain. In this case You must have a new server where You build new AD and then add computers and servers to this domain and promote some other server(s) to domain controler(s).

It is impossible to implement AD on member server in NT 4 domain.

by g_medley

I don't want to upgrade or promote any servers, just want to know what happens if I try and configure AD on a member server connecting to an NT 4 domain (which will remain NT 4)

by tony.colgrove

The Win2K AD server would become its own DC for a new domain, and no longer be joined to your NT4 domain. When you do a dcpromo, you would have to create a new domain, since it will fail trying to join a NT4 domain, and it checks for NETBIOS domainnames when clicking next on that part of the AD installation. You will get a message back saying that NBT Domain already exists, pick another.

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