alain boyer Newbie1 Reg: 26-Oct-2020 Posts: 2 Solutions: 0 Kudos: 0 This forum thread needs a solution. Kudos0 erreur 8504 , 104 Posted: 16-Apr-2021 | 7:47AM · 1 Reply · Permalink erreur 8504 ,104 I have the same question0 Last Comment Replies bjm_ Guru Norton Fighter25 Reg: 07-Sep-2008 Posts: 33,494 Solutions: 1,916 Kudos: 5,288 Kudos0 Re: erreur 8504 , 104 Posted: 16-Apr-2021 | 8:00AM · Edited: 16-Apr-2021 | 8:01AM · Permalink For Norton technical issues please include details for faster assistance from our forum Gurus and contributors: Norton product name and version Operating system Norton error message / error code / screen shot Steps to reproduce issue Note: DO NOT POST any personal information(email/order details/account ID/Product key/Full name/ address..etc) in public forums posts/comments or share with other forum customers. View detailed steps Error: "8504,104" This error can be caused by another security product or due to a failed install when the product is being upgraded to a newer version. To resolve this issue, Remove any non-Norton security product from your computer. If the problem still persists, [...] https://support.norton.com/sp/en/us/home/current/solutions/v62545568 This thread is closed from further comment. Please visit the forum to start a new thread.