Home → Policies & Security → Frequently Asked Questions → How can I automatically delete/clear private data when exiting Mozilla Firefox?
To automatically clear private data in Mozilla Firefox:
1. Open Firefox.
2. Select Tools from the toolbar.
3. Select Options from the pull-down menu.
4. Select the Privacy Tab.
5. Click on the checkbox, to put a check mark, under Private Data section: “Always clear my private data when I close Firefox”.
6. Click on the Settings… box.
7. Make sure that all of the checkboxes are selected with checks.
8. Click OK.
9. Click OK.
10. Every time you close Firefox you will prompted to “Clear Private Data Now”.