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

Avatar for Username

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
This thread was archived. Please ask a new question if you need help.
Solved Archived

Thunderbird quit working on my Windows 10 laptop today, it doesn't send or receive emails.

Thunderbird Troubleshooting
ConnieNorheim replied 7 years ago
ConnieNorheim
ConnieNorheim

Thunderbird was working fine until this morning on my Windows 10 laptop.

Now when I try to download email the circle spins, the green bar moves across, but no email downloads.

When I try to send an email I get the following error message:

An error occurred while sending mail. The mail server sent an incorrect greeting: Cannot connect to SMTP server 2603:1036:302:4080::2 (2603:1036:302:4080::2:58

Thunderbird was working fine until this morning on my Windows 10 laptop. Now when I try to download email the circle spins, the green bar moves across, but no email downloads. When I try to send an email I get the following error message: An error occurred while sending mail. The mail server sent an incorrect greeting: Cannot connect to SMTP server 2603:1036:302:4080::2 (2603:1036:302:4080::2:58

All Replies (1)

ConnieNorheim
ConnieNorheim Question owner

Chosen Solution

My Thunderbird account is working properly today without my doing anything