While accessing your device Norton shows an error 8504, 101, this error can happen due to many reasons including threat infection and other unauthorized activity. Well, Norton is antivirus which work is to detect and remove viruses and malware but, sometimes it also encounters to a few technical glitches which one can easily rectify.
To resolve this error code there are a few ways which you can pursue according to you. Complete the process and solve the error by following the below steps.
Download and run Norton Power Eraser:
Install and run the Norton Remove and Reinstall tool: