Functional Domain level question

I have a Server 2003 Funtional Domain level now. If I move to a 2008 R2, what are the reprocussions. For example:

When we moved from server 2000 to 2003 we dropped support for Windows 2000 Clients (yes we still have ONE)

We are running XP on a couple client stations now and have Windows 7 mostly.

Any advice would be appreciated.
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speeDemonAsked:
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Mike KlineConnect With a Mentor Commented:
2003 and 2003 R2 servers will be fine

Thanks

Mike
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Mike KlineCommented:
Windows 2000 is not officially supported, There are a few issues discussed in the excellent blog post below

http://blogs.technet.com/b/askpfeplat/archive/2012/04/09/a-few-things-you-should-know-about-raising-the-dfl-and-or-ffl-to-windows-server-2008-r2.aspx

I'd test in a lab just to make sure.  Add a 2000 box and raise the functional level to 2008 R2.  you should be good to go but I haven't tested that exact scenario.

Thanks

Mike
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Rsilva98Commented:
hi,

You can have a 2000 machine on a 2008 environment. although the 2000 machine must have SP3.

The only problem you may have is GPO issues.Group policies introduced by AD in server 2008 will not work. older policies will.
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Sikhumbuzo NtsadaSenior IT TechnicianCommented:
Another thing I picked up is if you run something like an ISA on Server 2003, And you try using AD, it does not work.

It worked when I left the level to just Server 2008, not R2.
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speeDemonAuthor Commented:
i just need to know if it will affect me XP clients going from 2003 to 2008 R2. I do not have a test environment to use...
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Sarang TinguriaConnect With a Mentor Sr EngineerCommented:
XP clients won't get affected ...Make sure you have Group Policy Preference Client Side Extensions for Windows XP (KB943729) installed for new group Policies to work
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speeDemonAuthor Commented:
what about server 2003, 2003 R2 Servers?
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speeDemonAuthor Commented:
Thanks all
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