Clear Firefox browser cache
Click History and Bookmarks in the top right corner.
- Click Clear Recent History.
- Select boxes to clear. Select Cache to clear the browser cache.
Note: Be sure to set the Time range to clear to "Everything".
Click Clear Now.
Exit Firefox completely.
Mac: Click on Firefox in the top-left corner of the screen, and click Quit Firefox at the bottom of the menu.
Windows: Click the X at the top-right corner of the browser.