Certificates and Thunderbird

[pranaman]

Hi,

How do I do this https://support.avast.com/en-us/article/Troubleshoot-invalid-email-certificate, fix the SSL errors and export a certificate with the new version of avast?

[Asyn]

-> https://forum.avast.com/index.php?topic=224906.0

[pranaman]

thank you, I followed it, imported it into TB, but, getting this message "This certificate is already installed..."

[Asyn]

- Which Avast..? (Free/Pro/IS/Premier)
- Which version..?
- OS..? (32/64 Bit..? - which SP/Build..?)
- Other security related software installed..?
- Which AV(s) did you use before Avast..?
- Which version of Thunderbird..?

[pranaman]

- Avast.. Free
- Which version..? 19.1.2360 (build 19.1.4142.454)
- OS..? (32/64 Bit..? - which SP/Build..?) W10 64 bit, ver 1803, build 17134.523
- Other security related software installed..? malwarebytes
- Which AV(s) did you use before Avast..? none
- Which version of Thunderbird..? 65.0b4.

[Asyn]

1. Download Avast Free Antivirus: https://files.avast.com/iavs9x/avast_free_antivirus_setup_offline.exe
2. Follow instructions: https://www.avast.com/uninstall-utility (Run this tool for all prior installed Avast versions..!!)
3. Reinstall Avast with the downloaded installer from point 1.
4. Reboot.

PS: Regarding Avast & Malwarebytes, see: https://forums.malwarebytes.com/topic/200324-exclusions-for-avast-users/

[alanb]

imported it into TB, but, getting this message "This certificate is already installed..."

You need to delete the old certificate from Thunderbird's certificate manager first, then re-import.

[pranaman]

removed them both, still getting that message. Closed and reopened TB, got the same thing.

[Asyn]

removed them both, still getting that message. Closed and reopened TB, got the same thing.

See Reply #5.