UPDATE June 19 2010 – stop reading and go here:
There’s a known issue with installing Active Directory Migration Tool (ADMT) v3.1 onto a Windows Server 2008 R2 computers that I want to bring to everyone’s attention. At this time it has been acknowledged that version 3.1 (which does require Windows Server 2008) returns the following error when attempting to install it onto R2:
“ADMT must be installed on Windows Server 2008”
This issue also occurs with Windows 2008 machines that previously had ADMT installed, and then upgraded to Windows 2008 R2. ADMT will no longer function correctly and returns the same error as detailed above. Microsoft is aware of the issue and diligently working on a resolution. Please stay tuned for further details and updates.
I’d also like to take this opportunity to ask that you send me any future feature suggestions and requests for the tool, as I’ve been asked to present results of the “voice of the customer”. The ADMT development group would like to hear from our customers on how we could make the product better. Please feel free to post comments or email your recommendations and suggestions in what you’d like to see in a later release of ADMT.