Norton said the user may need to reinstall the browser extension or there is an option that says "Isolation mode" where the person can see the site while the browsing extension is on. They can also try changing browser (it would have to be compatible with FileMaker WebDirect so one of the below:
| Desktop browsers | Mobile browsers |
|---|---|
| Safari 12.x minimum | Mobile Safari on iOS 12.x minimum |
| Chrome 73 minimum | Chrome 73 minimum on Android 7.x minimum |
| Internet Explorer 11.x | |
| Microsoft Edge 44 |
Failing that, the user will have to contact Norton themselves.