Can I join Windows 2012 R2 member server to Windows 2000 mixed domain functional level

As titled.

We have a WIndows 2000 mixed domain functional level domain, and we have a Windows 2012 R2 member server which needs to join the domain. Currently we can't change the domain functional level because the domain is not under our control.

Is it possible to join the member to the domain? Would anybody have success or failure cases for such scenarios to share too?
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JohnBusiness Consultant (Owner)Commented:
I cannot answer the question directly but I certainly would not do this. Windows 2000 is long dead and you risk security breaches as well as the inability to update Windows 2000 if you need a patch for Server 2012. You need to be concerned with NTLM authentication to talk back and forth.

Perhaps get Microsoft Consulting to set this up allowing Server 2012 to be a Domain Controller and connect some other way.
meinreflectionAuthor Commented:
HI Gaurav,

The Windows 2012 R2 member server is not going to be a domain controller. Would that still be possible?
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meinreflectionAuthor Commented:
Hi John,

I understand what you mean, but using Windows 2000 level for domain function level is not something I can change right now.
JohnBusiness Consultant (Owner)Commented:
Windows 2000 is so old that you almost for certain cannot do this.

You need to get some serious consulting help (Microsoft) to set it up for you.

You have to go back to where the Server 2000 lives and convince them to upgrade.
To answer your question, yes, you can join a Windows 2012 *Member Server* to a domain that is running at any domain and/or forest functional level.  These levels do not have any affect on the clients or member server operating system, only on Domain Controllers.

That being said, there are, however, potential problems with regards to programs and/or services that will be running (e.g. Exchange, CRM, Sharepoint).  Ensure that you consult the software documentation to determine if the domain and/or forest functional levels have any affect.


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Walter CurtisSharePoint AEDCommented:
Being a member server, the best way your can tell if this works is to try it. Worst case it won't work, or best case it will. Of course there may be issues as listed above, but sounds like you have no other choice.

Hope that helps
meinreflectionAuthor Commented:
I joined the 2012 R2 server to the domain with Windows 2000 mixed domain function level.
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Windows Server 2012

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