Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More
Solved Archived

I can no longer connect to my email on Comcast with Thunderbird

user01229325 replied
veuzent

Comcast tech support verified settings are now correct but still cannot connect. changed to recommended ports and SSL, but still does not work. Can connect with web mail on this computer and other devices. I see other people seem to have the same problem.

Comcast tech support verified settings are now correct but still cannot connect. changed to recommended ports and SSL, but still does not work. Can connect with web mail on this computer and other devices. I see other people seem to have the same problem.

All Replies (4)

This is the comcast error message

Chosen Solution

What are you using for the SMTP settings? What I have that is working is: Port 465 SSL/TLS Normal Password

Check your firewall and make sure it is not blocking Thunderbird.

Connecting with web mail just verifies that you know your username and password. Web mail and SMTP are completely different servers and operations.

My Norton Security Suite had the Thunderbird Firewall setting on Auto. I changed it to Allow and now everything connects.

Thanks alot, I think Norton Security update may have occurred

Glad you are back working.