BitDefender 2013 is not allowing me to print to my HP Officejet Pro 8600 printer. When installing the printer with the HP utilities, the system hangs when trying to connect to the printer. It seems to happen when HPNetworkCommunicator.exe is launched and shows up in task manager. Killing this process in task manager results in an error in the HP setup utility that the printer cannot be found and the setup can then be closed, but no printer is installed. Shutting down the firewall has no effect on the problem. After uninstalling BitDefender 2013, the printer installs fine. Once BitDefender 2013 is reinstalled, the problem returns. I have given HPNetworkCommunicator.exe application permission to access the internet. I have set up the Firewall settings as recomended by the sticky note in this forum. If I go into control panel and add the printer from the Add Printer method, I am then able to print to the printer, but the other functions I use regularly such as scan to computer and maintenance functions do not work (HPNetworkCommunicator.exe again). I have the HP installation utility on a laptop running BitDefender 2012 and the printer works just fine including all advanced features on the printer. Any ideas from anyone else on what to do? I am running Windows 7 (64 bit) on a HPTouchSmart 520 PC.