Windows 2012 R2 DC compatibility Windows 2000 Servers and Windows XP

We are going to upgrade our Active Directory from 2003 to 2012 or 2012 R2 (Not sure which one yet). I want to ask if anyone know if Windows 2000 Servers which are running legacy Apps and  Few Windows XP workstation Will join new DC after the upgrade. and If what know issues I might face after the upgrade and any workaround.
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JohnBusiness Consultant (Owner)Commented:
Windows 2000 is dead but it should join the domain. I have read that.
Windows XP may need to map drives if it won't join the domain, but that should work (mapping drives).
stghelpdeskAuthor Commented:
So I will not get "The trust relationship between this workstation and the primary domain failed" Error and Is this for 2012 R2 Dc or 2012.
JohnBusiness Consultant (Owner)Commented:
The systems are so old there is no compatibility and all you can do is try to connect.
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stghelpdeskAuthor Commented:
I am afraid to try without knowing if other who have tried and successfully worked or not
JohnBusiness Consultant (Owner)Commented:
See what others say. There is nothing you can do with dead software except try.
Lee W, MVPTechnology and Business Process AdvisorCommented:
As John said, 2000 and XP are dead. Even if they work today, patching your 2012 servers COULD break them. Consider this - Microsoft it's trying to keep secure their recent operating systems AND ensure their supported older operating systems continue to function with each update. They test older supported operating systems before releasing updates. They likely DO NOT test unsupported operating systems.

So you can try it... And while I believe it works today, it may well not work tomorrow. Your best course of action is to upgrade whatever software you are using to a version that runs on a MODERN operating system.

Doing anything else is risky and depending what the business does and what the apps do, potentially risking the entire business.
I agree with the above. Upgrade your ancient OS's and Software.

When you aren't sure whether something works or not, you should test it. Windows 2012 r2 (I'd always take the newer OS, there's no point of using an older one) is available as a trial which you can download from m$'s technet site. Install it on a testing PC, make it a DC, then try adding PC's running Windows 2000 server and XP to the domain.
stghelpdeskAuthor Commented:
Here is answer: Did some googling...

There are no known issues for authenticating Windows server 2000 or XP from Windows 2012 R2 DC. However, you need to configure following Group Policy to configure encryption types allowed for Kerberos on DCs in order to support authentication for Windows server 2000 or XP:
GPO_name > Computer Configuration > Windows Settings > Security Settings > local Policies > Security Options > Network Security: Configure encryption types allowed for Kerberos > select all checkboxes.
Also, refer to following article if you plan to use both 2003 and 2012 R2 Domain controllers in your domain:

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stghelpdeskAuthor Commented:
tested and it working
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