ESET interferes with Thunderbird

[Thomas F. 0]

Hello.

We use ESET Protect and Thunderbird as e-mail clients.
Today I wanted to set up a new account I created at Hetzner. I received the following output:

The certificate is therefore valid. If I deactivate ESET, no error message appears. As we are now moving all accounts to this provider, I don't want to have to confirm exceptions everywhere. How can I solve this problem?
 

Regards,
Thomas

 

 

[Marcos 4,935]

Do you have this setting enabled?

[Thomas F. 0]

Yes

[Marcos 4,935]

Please carry on as follows:

1. With Thunderbird closed (make sure its process in not running in Task manager), disable SSL/TLS filtering and click OK to save the changes.
2. Re-enable SSL/TLS filtering.
3. Launch Thunderbird.

Should the issue persist, repeat the above procedure but before re-enable SSL/TLS filtering start logging with Procmon. At the end stop logging, save the log unfiltered, compress it and supply me with the archive.

[Thomas F. 0]

40 minutes ago, Marcos said:

Please carry on as follows:

1. With Thunderbird closed (make sure its process in not running in Task manager), disable SSL/TLS filtering and click OK to save the changes.
2. Re-enable SSL/TLS filtering.
3. Launch Thunderbird.

That worked! Now, please tell me why. Is it enough to switch the setting in the policy off and on again?

 

[Marcos 4,935]

Re-enabling SSL/TLS filtering will trigger import of the root certificate into supported email clients. It could be that Thunderbird was installed after ESET.

[Thomas F. 0]

Thanks, Marcos.