Mozilla Firefox: Clear Cache and Cookies
- Click on the Tools bar.
- Click on Options (On Mac, it's labeled Preferences).
- On the menu to the left, select Privacy & Security.
- Under the Cookies and Site Data option, click the "Clear Data..." button.
- Select only the two options and hit clear now.
- If on a Windows computer, close and re-open Firefox to save your changes. If on an Apple computer, go to the Firefox menu on the top menu bar and select Quit for the changes to take effect.