In the test controller configuration tool, you might see the following errors, when you install the test controller on a domain controller machine:

1. Failed to add Administrators group to TestTeamControllerAdmins group. The configuration log file contains an exception “Could not add WinNT://BUILTIN/Administrators to group. Exception: System.Runtime.InteropServices.COMException (0x8007056C): A new member could not be added to a local group because the member has the wrong account type” 
2. Aditionally, if your service account is Network Service, you might see an error: “Failed to Configure ACL”  The configuration log file contains an exception “Systems.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. —> System.Runtime.InteropServices.COMException: A new member could not be added to a local group because the memeber has the wrong account type”

Possible Cause: The Domain controller machine has no local accounts or  groups. This is not handled as a special case in the configuration tool.

Solution:  For problem 1 you have to ignore this error and close the configuration tool, as long as all other steps are successful This is not a fatal error and does not affect the working of the test controller.

Here you can see some logs and screen shots:

Has this happened to you before? Do you know how to resolve problem #2? Tell us your experiences.