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Raising domain and forest functional level

Hi Experts,

I am currently at a client whose Domain Functional Level is 2000 Mixed and Forest Functional Level is Windows 2000. There are no  Windows 2000 servers in this domain, there is only one site, one forest, one domain. I want to raise it to at least Windows 2003 forest and domain level. On reading I found that I first need to raise the domain to Windows 2000 native before doing anything with Windows 2003, is this correct? If so in what order should I be raising the domain and forest functional levels?

TIA
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Alan HardistyCo-Owner
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Top Expert 2011
Commented:
Just raise them both in whatever order to 2003 - it isn't important which way round you do it.
The domain functional level needs to be raised to 2003 before it is possible to raise the forest to 2003.  This assumes all domain controllers are 2003 or higher -- and since you said all servers were, that would include DCs.
Sajid Shaik MSystem Admin
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Commented:
simplt rise it to 2003 level..... all the best..

Author

Commented:
Thanks for the responses and it should matter that we run Exchange 2003 SP2, correct?
Alan HardistyCo-Owner
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Top Expert 2011

Commented:
Exchange won't care.
Sajid Shaik MSystem Admin
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Commented:
u r on the righ way.... proceed without any though...

 all the best
Exchange should not be impacted negatively, no.
Kamalasekar ParthasarathyMessaging Support

Commented:
It will not affect exchange.. It will affect only in AD environment.

Please find the below link

http://www.winserverkb.com/Uwe/Forum.aspx/windows-server-ad/30748/Raising-Domain-Forest-Functional-Level-Impact-on-Exchange
Sandesh DubeyTechnical Lead
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Top Expert 2011

Commented:
You can proceed no issue raise the domain and forest functinal level to 2003,it will not impact the DC.

Author

Commented:
Worked like a charm. Upgraded domain first and then forest. Thanks everyone!!

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