A poor or bad Internet connection and an old version of HP Support Assistant are why you are seeing the “HPSupportAssistantnotWorking” error code displaying on your screen every now and then. However, the steps are simple if you want to fix them. We recommend you do a full clean up and then restart your computer. You also need to check the connection of your internet. The most effective way to fix this error message is uninstalling and re installing this software for one time so that your software is started from new.