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How can I restore certificates?


When I was updating Mozilla Firefox i lost all my personal certificates. Is there a way to restore them or get them back?

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  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:11.0) Gecko/20100101 Firefox/11.0

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  • Administrator
  • Moderator
380 solutions 1848 answers

Hi neznan,

Have you looked at the Troubleshoot the "Secure Connection Failed" error message Knowledge Base article? Your certificates might not actually be lost. Something as simple as an incorrect system time can make it appear as if they've all been removed. I'd try the steps in that article first.

Hopefully this helps!

  • Top 10 Contributor
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10755 solutions 96800 answers

Do you still see the certificates in the Certificate Manager?

  • Tools > Options > Advanced : Encryption: Certificates - View Certificates > Your Certificates

If not then you would need a backup copy of the cert8.db file in the Firefox Profile Folder.