Reset Master Password For The Software Security Device in Firefox

In some cases, you might ask for enter master password as below "Please Enter The Master Password For The Software Security Device" But you might not remember your master password, then some process will not be go through until you enter the right master password. How to Fix it? I google the some key words and found a good solution Step1. Enther "chrome://pippki/content/resetpassword.xul" in your URL location field. Step2. Press "Reset" button Step3. Check the password check-box from "Tools\Options\Security ". The "Use a mater password" should un-selected.