How to remove Avast certificate blocking emails, after uninstalling

[posword]

Avast 2015 Free this morning started to block my reception of emails from gmail.com in Eudora 7 and Thunderbird, though I can send emails.

I eventually went to the Avast site, got their uninstall utility, and removed the program correctly. However, it didn't remove the certificate with the unknown error. The certificate is issued by Issuer: C=US, O=Equifax, OU=Equifax Secure Certificate Authority and the date range is correct.

I went into Certificate Manager from CMD and removed all Equifax certificates, shut down, restarted but I get the same result. Does anyone know how to get rid of this certificate?

Thanks,
Peter

 

[Andyrids]

You mentioned Thunderbird if you go into Options -> Certificates -> View Certificates and then the Authorities tab you should see the Avast Certificate there, I would check the other tabs as I have known it to be in there also at times...