Here’s a list of potential scenarios that might trigger this error:
Restarting your computer
As it turns out, this issue can also occur due to a common inconsistency that might appear due to some temporary files that are interfering with the updating/uninstallation procedure. Before trying out a more permanent fix, you should start with a simple restart and see if the problem persists after the next startup. So reboot your computer conventionally and repeat the action that is currently causing the 8504,104 error once the next startup is complete and see if the problem is now fixed. In case you’re still facing the same behavior, move down to the next potential fix below.
Using Norton Remove & Reinstall
The vast majority of users encountering the 8504,104 error have confirmed that the issue was resolved entirely after they ran the Norton Remove and Reinstall tool. This is a specialized tool that was internally developed especially for situations where the antivirus cannot be uninstalled conventionally. This operation will remove any file belonging to Norton AV along with any remnant file that might be the cause for 8504,104 error. Follow the instructions below for step by step guidance on uninstalling your Norton product: If you see that the 8504,104 error is still occurring, move down to the next potential fix below.
Uninstalling Conflicting 3rd party AV suite (if applicable)
As it turns out, this issue can also occur due to a conflict between Norton and a different 3rd party tool that is also installed on the computer where you’re encountering the 8504,104 error on. If this scenario is applicable, you should be able to fix the issue by uninstalling any 3rd party Antivirus or security scanner with the potential of conflicting with Norton. Several affected users have confirmed that this operation finally allowed them to complete the uninstall, repair or update procedure without receiving the same error message. Here’s a quick guide on uninstalling any conflicting 3rd party AV suite:
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