Avast WEBforum

Consumer Products => Avast Free Antivirus / Premium Security (legacy Pro Antivirus, Internet Security, Premier) => Topic started by: leo300 on November 19, 2020, 09:47:27 AM

Title: Avast blocking thunderbird mail
Post by: leo300 on November 19, 2020, 09:47:27 AM

I cannot send or receive emails through thunderbird since avast is now suddenly blocking all emails
I get the following message when trying to send
Sending of the message failed.
Peer's certificate has an invalid signature.
The configuration related to ..............(my server) must be corrected

I tried updating avast, then exporting a certificate from avast (but thunderbird won't accept it, saying:
This personal certificate can't be installed because you do not own the corresponding private key which was created when the certificate was requested.


I've looked in the forum and seen endless similar posts going way back, how is it avast is still creating these issues, can anyone suggest a way to fix my issue?

Title: Re: Avast blocking thunderbird mail
Post by: schmidthouse on November 19, 2020, 07:07:01 PM

This may help
https://support.avast.com/en-ww/article/91/ (https://support.avast.com/en-ww/article/91/)