I have tried the following with no success. - Unistalling and installing the PP3. - Stoping and restarting the service related to CqvSvc.exe.
Note: Only one time, I saw this feature working, when I installed WHS PP3 Eval version. As soon as I uninstalled eval version and reinstalled licensed version, this feature never worked. My WHS version is 6.0.2423.0 (which is correct PP3 version).