Firefox uses master password to provide enhanced security by protecting the stored sign-on information for various websites. By default Firefox does not set the master password. However once you have set the master password, you need to provide it every time to view sign-on credentials.

So if you have lost the master password, then you have lost all the stored credentials as well.
After a little research on Firefox master password, I found a way to reset the password and also a way to crack the master password.
There’s a simple way on how to reset the Firefox master password.
1. Run Firefox browser.
2. At the address bar, type the following link and hit Enter.
3. You will be prompted “If you reset your master password, all your stored web and e-mail passwords, form data, personal certificates, and private keys will be forgotten. Are you sure you want to reset your master password?”.
4. Click “Reset” button and it will reset all your stored credentials.

Resetting the master password is rather useless since you’ll be loosing all your saved login information. I can easily create a new profile that won’t have a master password.
There’s another way you can recover Firefox master password but it requires time, a good dictionary file and also a little bit of luck. FireMaster is the Firefox master password recovery tool. It uses various methods such as dictionary, hybrid and brute force techniques to recover the master password from the Firefox key database file.

FireMaster is DOS base. So you need to understand and know the commands to use FireMaster. FireMaster is designed with good intention to prevent any master password related problems faced by Firefox users.
[ Download FireMaster | FireMaster Website ]
Now you know that Firefox Master Password can’t be easily decrypted. If you have a lot of saved login information in your Firefox, make sure you set a Master Password! Don’t wait until someone set a master password on your Firefox browser and then you’ll searching for ways to decrypt it.
Related posts:
How to recover the saved passwords if Firefox has crashed?
Hi
I’m sure I’ve never set a master pw, still I get promted for it every time I try to save a pw. Why is that? Is there a default pw or something?
Thank u :)
Gracias
firemaster doesn’t work with vista ultimate; it crashed.
Muito obrigado pele vosso serviço. Fui ajudado plenamente.
Agora posso usar outra senha mestre.
*sigh of relief*
Thank you for taking the time to post this. BIG thank you. =)
thanx alot it’s a perfect & useful way to rest firefox master password
thanku
thank you so much
i found your page very helpful
peace
الله
d
he/she talks about firefox, i am testing if it can crack my master passport i have 11 hours to wait :P
thanks for the information. but how about recovering passwords from email accounts or online forms? i lost my email password but i already deleted and emptied the cache of my browser. can i still locate or recover my password?
how do i get a master password on firefox
thanks, i got what i was looking for ….
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