Microsoft Test Manager cannot install test agent on these machines. Possible causes: - The File and Printer Sharing exception ...

Microsoft Test Manager cannot install test agent on these machines. Possible causes:
  - The File and Printer Sharing exception is not enabled on the machines.
  - The user name or password provided is not valid.
  - The machine has Microsoft Windows XP operating system. To resolve this, follow the steps mentioned at http://go.microsoft.com/fwlink/?LinkID=247269&clcid=0x409 to install/configure the test agent.