Norton is a well-known antivirus software that protects your computer from the attack of external viruses, malwares and infected files. With the help of Norton antivirus you can protect your system from the hackers and trozen horse also. But to make your antivirus capable to fight with these kinds of harmful viruses it is important to update your antivirus software time to time. As antivirus is a software then there is a great possibility that you can face errors and problems while working with an such a software. Under these circumstances, you have to go for antivirus technical support from Norton antivirus tech support expert. There are many kinds of error that a user of Norton antivirus can encounter while working on Norton antivirus. Norton error 8504 and 104 is also a very popular kind of error this error generally appears when you are not able to update your antivirus software or in short, we can say that When you are unable to update your antivirus software then Norton error 8504 and 104 encountered in your antivirus software. There are some very simple steps that you can follow to solve this error but if you are looking for technical support from antivirus technical support experts then you can Call @ +1 888-225-4458 for antivirus technical support from Norton antivirus tech support experts.