This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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.

Thunderbird 78.5.0 Not Downloading Email From Xfinity Mail Server

  • 3 replies
  • 1 has this problem
  • 3 views
  • Last reply by r.riviello

r.riviello
r.riviello
more options

November 30, 2020

As of a day or two ago, Thunderbird 78.5.0 will not download email from the Comcast/Xfinity Server. I can send mail out, but I can not receive email with Thunderbird. It appears as though Thunderbird is hanging when it is attempting to bring down email. I have been running 78.5.0 since November 19. My guess is Comcast changed something, and Thunderbird is the victim.

Any ideas to get around this problem?

Thanks, RR

November 30, 2020 As of a day or two ago, Thunderbird 78.5.0 will not download email from the Comcast/Xfinity Server. I can send mail out, but I can not receive email with Thunderbird. It appears as though Thunderbird is hanging when it is attempting to bring down email. I have been running 78.5.0 since November 19. My guess is Comcast changed something, and Thunderbird is the victim. Any ideas to get around this problem? Thanks, RR

All Replies (3)

Wayne Mery
Wayne Mery
  • Moderator
  • Top 10 Contributor
more options

ESET is known to have caused problems today.

Wayne Mery
Wayne Mery
  • Moderator
  • Top 10 Contributor
more options

Specifically, according to their forums, you should temporarily disable SSL until they solve the problem per https://support.eset.com/en/kb3126-disable-ssl-filtering-in-eset-windows-products?ref=esf - the problem is being reported by dozens of users https://forum.eset.com/topic/26517-problems-with-thunderbird-and-imaps/ https://forum.eset.com/discover/

r.riviello
r.riviello Question owner
more options

Wayne,

Thanks for pointing me in the right direction. I am running Eset Security, and I was able to find a solution to my problem on the Eset Forum. I followed the steps suggested by Kathryn: 

   1. Disable SSL filtering
   2. Close Thunderbird
   3. Launch Thunderbird
   4. Re-enable SSL filtering.

Thanks to all the help from Mozilla Support and the Eset Forum!

RR