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Can't enable security sandbox

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jacknaimer
jacknaimer
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Right below the search bar my browser has a warning "The security sandbox is disabled. Your configuration is unsupported and less secure."

I am on Windows 10. I have tried uninstalling firefox, removing appdata and all other firefox files and settings, resetting about:configs settings, disabling my BitDefender antivirus. Nothing fixes it. Completely fresh install of firefox still gives me that message. Sandbox level is default (9).

Any help would be appreciated.

Right below the search bar my browser has a warning "The security sandbox is disabled. Your configuration is unsupported and less secure." I am on Windows 10. I have tried uninstalling firefox, removing appdata and all other firefox files and settings, resetting about:configs settings, disabling my BitDefender antivirus. Nothing fixes it. Completely fresh install of firefox still gives me that message. Sandbox level is default (9). Any help would be appreciated.

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