We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

after mozbackup restores "certificates" firefox cannot start, other items restore OK

  • 3 பதிலளிப்புகள்
  • 1 இந்த பிரச்சனை உள்ளது
  • 4 views
  • Last reply by cor-el

I use Mozbackup to synchronise Firefox from my desktop to my laptop. My laptop's Firefox would not start and displayed a crash reporting dialog.

I completely uninstalled and made a fresh, new install with Beta 19.0.2. I then restored my Mozbackup from my desktop, item by item. When the "Certificates" item was restored, Firefox would not start and display the crash repoting dialog. So now I know that the certificates item is the culprit.

Why does this allow Firefox to start on my desktop but refuses to do so on my laptop?

Thanks a lot! heskel@usa.net

I use Mozbackup to synchronise Firefox from my desktop to my laptop. My laptop's Firefox would not start and displayed a crash reporting dialog. I completely uninstalled and made a fresh, new install with Beta 19.0.2. I then restored my Mozbackup from my desktop, item by item. When the "Certificates" item was restored, Firefox would not start and display the crash repoting dialog. So now I know that the certificates item is the culprit. Why does this allow Firefox to start on my desktop but refuses to do so on my laptop? Thanks a lot! heskel@usa.net

All Replies (3)

Did you try to remove the cert8.db file?

You can use this button to go to the Firefox profile folder:

  • Help > Troubleshooting Information > Profile Directory: Show Folder

I used the Mozbackup file from my desktop, which does not seem to have this probem, to restore all my Firefox settings. I restored the settings category by category until I found the culprit by process of elimination. The "Certificates" item from the backup is the one that prevented Firefox from starting. My question is, why this happens?

Did you also restore the secmode.db file?