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leod1

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Extend AD Schema to 2008 R2 after domain upgrade.

I just started new job and inherit AD Functional level 2008 R2, Hybrid Exchange 2010 2013 cloud, but schema version is still 31 2003 R2. I need to extend Schema to 2008 r2 safely. Any Recommendations please?
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Scott C
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Remote any and all 2003 servers and then raise the functional levels.

https://support.microsoft.com/en-us/help/322692/how-to-raise-active-directory-domain-and-forest-functional-levels

I never have had this cause any issues.
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leod1

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Functional level already 2008 R2. No 2003 DCs on the network.
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Scott C
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The same applies to Exchange Schema Version upgraded than any schema upgrade

Environment needs to be healthy and do full domain backup
Glad I could help.