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Security Library Failure

  • 3 replies
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  • Last reply by sfhowes

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Has anyone seen this error when sending an email? We have several email accounts on a computer using thunderbird. Recently, we received this message on a ....bellsouth.net account. (now migrated to ATT) So I decided to delete the email account and start over. Now I cannot get Thunderbird to recognize this email and cannot build the new account. We have it on 6 other computers with no issue. Any advice?

Happy to add additional images if needed.

Has anyone seen this error when sending an email? We have several email accounts on a computer using thunderbird. Recently, we received this message on a ....bellsouth.net account. (now migrated to ATT) So I decided to delete the email account and start over. Now I cannot get Thunderbird to recognize this email and cannot build the new account. We have it on 6 other computers with no issue. Any advice? Happy to add additional images if needed.

All Replies (3)

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Did you apply a secure mail key in place of the password in TB?

https://www.att.com/support/article/dsl-high-speed/KM1010523/

A separate key is required for each computer that accesses the account.

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In the Security section, it does show the Secure key. My problem is that I cannot get Thunderbird to even build the mailbox- says it cannot find the server. And I can't get it to prompt me for the password.

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Make sure you have the correct settings as shown in the att.com article, set the authentication method in TB to 'normal password', and enter the secure key in the password box when credentials are requested in the account setup routine. Also, disable the antivirus in case it's interfering with connections to the mail server. Delete any entries in Settings/Privacy & Security, Saved Passwords, restart TB, add the account.