Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

I forgot my Master Password. I use Sync. Please help.

  • 2 cavab
  • 2 have this problem
  • 1 view
  • Last reply by cor-el

more options

2xMacBook Pro's OS X 10.6.8. FF 5.0.1. Changed Master Password on one Mac/Browser, but forgot next day. Now every time open FF I get a prompt for Master Password Security Device.

Sync no longer works. Would like to reset FF 5.0.1 MPW so I could use my current/old Sync and access pw's in 5.0.1 browser. I found info on Sync, but no solution other than start over you've been Fracked.

2xMacBook Pro's OS X 10.6.8. FF 5.0.1. Changed Master Password on one Mac/Browser, but forgot next day. Now every time open FF I get a prompt for Master Password Security Device. Sync no longer works. Would like to reset FF 5.0.1 MPW so I could use my current/old Sync and access pw's in 5.0.1 browser. I found info on Sync, but no solution other than start over you've been Fracked.

All Replies (2)

more options

You can reset the Master Password and then use the SyncKey from the other Mac to get that 2nd Mac re-connected with Sync; along with the email address for the username and the Password for your Sync account to get that 2nd Mac reconnected with Sync. You can get all that from the Password Manager on the 1st Mac. Once that is set up, your other Passwords should get Sync'd back to that 2nd Mac.

Not as bad as if you lost the SyncKey, too. Then you would be starting almost from scratch.

more options

You can find the sync password and the sync key in the password manager on the computer where you originally created that sync account (email).

Look for:

  • chrome://weave (Mozilla Services Password)
  • chrome://weave (Mozilla Services Encryption Passphrase)

  • Firefox > Preferences > Security: Passwords: "Saved Passwords" > "Show Passwords"