The Hyper-V Data Exchange Service is not installed on the virtual machine

I am preparing a machine for testing and demos. While I was busy installing my machine I was unable to start my build service anymore with the following error

Build Service received Stop command and will be stopped. Details: Error in starting TFSBuildServiceHost in Lab mode. ExceptionType:System.Exception. ExceptionMessage:The Hyper-V Data Exchange Service is not installed on the virtual machine.

My installation is a single server installation with everyhing installed on my laptop, being:

1. Visual Studio 2010 Ultimate
2. Team Foundation Server 2010
3. Team Build 2010
4. Lab Management 2010
5. Test Agents
6. Lab Agents

I found out that the Test and Lab agents should *not* be installed on the server. They should be installed on the vm’s that I build to be hosted in the Lab environment. More information on this you can find at http://blogs.msdn.com/b/lab_management/archive/2010/04/21/setting-up-agents-controllers-for-lab.aspx

So uninstalling the Test and Lab agents solved my issue.