Are there any compatibility issues with TPAM when upgrading the Active Directory functional level from 2003 to 2008 R2?
There are no known issues caused by upgrading the Active Directory functional level.
As long as the Managed System for the Domain Controller in TPAM can still connect successfully and the functional account still has the correct permissions to manage domain users, the functional level of the domain should have no direct impact on TPAM functionality.
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