Norton 360 Error 8504 and 104

Norton is a great antivirus but the fact should not be overlooked that it has some hassles in terms of errors always involved. Error 8504 and 104 are two common errors that appear at the same time. It occurs when the Norton product is facing certain security issues or the installation of the program fails at the time of upgrade. You have the provision of troubleshooting the error or you can also ring on Norton helpline number that stays serviceable 24×7 online.

Causes of the Norton error 8504 and 104

  • Corrupt download or incomplete installation of Norton program on the device
  • Irregularities in the Windows registry from a recent Norton software change
  • Virus or malware infection that has corrupted Windows system files
  • Another program causing interruption or mistakenly deleted

Solution: Fixing Norton Error 8504 and 104

Step 1: Repair the registries entries associated with the error

  • Click on the start button > type command
  • Press Ctrl + shift + enter keys together
  • The process of disk cleanup will begin > select the temporary files
  • Click on checkboxes for the entries you want to clean

Step 2: Initiate a virus and malware scan
With the help of an antivirus, scan all the possible threats prevailing in the device. This will eliminate the error from appearing.

Step 3: Clean up the system junk by running disk cleanup

  • Click start button > type command
  • A permission dialogue box will appear, click yes
  • Type cleanmgr > press enter
  • Disk cleanup will initiate and the temporary files will be removed

Step 4: Install all available Windows updates

  • Click on the start button
  • Type update in the search box and press enter
  • The Windows update dialogue box will appear on screen
  • If any updates are available as pending then click install updates button

Also Read: Norton Blue Screen Error


Even there are many other fixes that you can try like updating PC drivers, undo recent system changes, uninstall and reinstall Norton. If the error still persists, then you must not wait anymore for troubleshooting, instead reach out to Norton customer support so as to avail the help from the technical representatives who have full knowledge about all Norton product issues and their appropriate solution.

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