Issue 8504,104 occurs very frequently when malware or another antivirus software interrupts Norton service from starting. Another apparent cause for this fault violated Norton installation or a file missing.
To solve this concern 8504,104, you require to uninstall and clean your current Norton installation and re-install. Be sure no another antivirus/internet security software is running on the system.
The logical way to delete Norton from your computer is to perform a Three Step Norton uninstallation procedure using the Norton Power Eraser Tool which is free-to-download and apply for any Norton customer, uninstalling Norton from Windows and running Norton Removal Tool.
The few steps below to do full Norton uninstall:
Download NPE and protect the file on a local disk
Run Norton Power Eraser and accept the License agreement enter the Scan for Risks figure to start Norton Power Eraser deep computer scan for viruses, rootkits and other malware that would prevent clean Norton instalcontinue reading