Windows 10 will reach EOS (end of support) on October 14, 2025. For more information, see this article.

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

SecurityError: a SecurityCertificate error occurred

  • 1 பதிலளி
  • 1 இந்த பிரச்சனை உள்ளது
  • 336 views
  • Last reply by hugh4

hugh4
hugh4
more options

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.

தீர்வு தேர்ந்தெடுக்கப்பட்டது

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.

Read this answer in context 👍 1

All Replies (1)

hugh4
hugh4 கேள்வியின் உரிமையாளர்
more options

தீர்வு தேர்ந்தெடுக்கப்பட்டது

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.