FireFox

  1. In Firefox, click on the Tools drop-down menu, and then select Clear Private Data.
    FireFox - Tools -> Clear Private Data menu
  2. On the Clear Private Data dialog window, make sure that the Browsing History checkbox is selected, and click the Clear Private Data Now button. This will clear your browsing history, and return you to FireFox.
    FireFox - Clear Private Data dialog window.