How to Reset Browser Settings
Are you planning on cleaning up your browser and deleting all your settings and personal information? It's time for a browser restoration. Read on to learn how to reset your browser to its default settings.
Firefox
1. Understand what resetting Firefox will accomplish. Firefox does not remove windows and tabs, browsing history and bookmarks, saved passwords, saved form history, or cookies. If you would like to remove those things, it will have to be done separately.
2. Open Firefox.
3. Click the Firefox menu button. This is located in the upper-right corner of the window. Press the ? symbol at the bottom of the drop-down menu to go to the Help page.
4. Click on Troubleshooting Information.
5. Press the Reset Firefox... button located at the top right of the page.
6. Confirm that you want to reset your browser settings. Then click Reset Firefox.