Hi there,
This sounds like you have followed up with the Prerequisite hub Transport role.
Please see the Link, which has the detailed step by step :
http://technet.microsoft.com/en-us/library/bb691354.aspxFirst Click on :Install the Windows Server 2008 R2 operating system prerequisites & follow the instruction.
Second Click : Install the Exchange 2010 SP1 and SP2 Hotfixes for Windows Server 2008 R2 & follow the instruction.
All the best for the installation.
Regards,
Ashwini Kumar
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