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SecurityError: a SecurityCertificate error occurred

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  • 1 has this problem
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  • Last reply by hugh4

hugh4
hugh4
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ThunderBird stopped being able to pick up email from our pop3 server.

The Error console shows: 

mailnews.pop3.1: SecurityError: a SecurityCertificate error occurred Pop3Client.jsm:336:18

_onError resource:///modules/Pop3Client.jsm:336

This doesn't give me a hint as to the problem is with the security certificate. It hasn't changed recently and worked yesterday.

The cert is self-signed and expires in a few days. Previously (not recently) I had to do a variety of things to make Thunderbird happy with it.

ThunderBird stopped being able to pick up email from our pop3 server. The Error console shows: mailnews.pop3.1: SecurityError: a SecurityCertificate error occurred Pop3Client.jsm:336:18 _onError resource:///modules/Pop3Client.jsm:336 This doesn't give me a hint as to the problem is with the security certificate. It hasn't changed recently and worked yesterday. The cert is self-signed and expires in a few days. Previously (not recently) I had to do a variety of things to make Thunderbird happy with it.

Chosen solution

I managed to fix this problem by deleting the certificate in Thunderbird and refetching it. I took the opportunity to regenerate the certificate with a later expiry date.

Settings: Privacy and Security: Certificates: Manage Certificates.

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hugh4
hugh4 Question owner
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Chosen Solution

I managed to fix this problem by deleting the certificate in Thunderbird and refetching it. I took the opportunity to regenerate the certificate with a later expiry date.

Settings: Privacy and Security: Certificates: Manage Certificates.