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

Cuireadh an snáithe seo sa chartlann. Cuir ceist nua má tá cabhair uait.

Thunderbird stopped synchronising with mail server including hotmail and gmail

  • 3 fhreagra
  • 2 leis an bhfadhb seo
  • 9 views
  • Freagra is déanaí ó Jean-Marc

Dirk
Dirk
more options

Several people I know have called me with the same problem, all in the afternoon of the 30th of november.

Thunderbird sends mail and gives error mail cannot be save in the sent folder, but does not receive mail, not from private imap server, hotmail nor gmail. (has done for at least the past 10 years)

Updated the 64 bit windows 10 to the latest version with no avail, also in safe mode, no go (with thunderbird 78 and 84b)

Could this be because of a security certificate running out of date?

More than 6 different pc have this problem all in the afternoon of the 30th of November and othe pc are still synchronising, question is why?

Several people I know have called me with the same problem, all in the afternoon of the 30th of november. Thunderbird sends mail and gives error mail cannot be save in the sent folder, but does not receive mail, not from private imap server, hotmail nor gmail. (has done for at least the past 10 years) Updated the 64 bit windows 10 to the latest version with no avail, also in safe mode, no go (with thunderbird 78 and 84b) Could this be because of a security certificate running out of date? More than 6 different pc have this problem all in the afternoon of the 30th of November and othe pc are still synchronising, question is why?

Réiteach roghnaithe

I spent more than half a day looking for topics about that problem... And the solution was in this forum! I will now know where to look, many thanks.

Read this answer in context 👍 0

All Replies (3)

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

If you are using ESET/NOD32 security/AV then probability is very high it is causing your problems. According to ESET forums, you should temporarily disable SSL on ESET 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/

You might also inform them of your difficulty.

Dirk
Dirk Úinéir na ceiste
more options

Ok thank you Wayne, it is the eset antivirus certificate that was at fault.

This is the solution for others who have the same problem:

Fix: 1, Make sure that Thunderbird is not running (ie. its process doesn't appear in the Task manager), or reboot the machine. 2, Disable SSL filtering in the advanced ESET setup and click OK. 3, Re-enable SSL filtering in the advanced ESET setup and click OK. 4, Launch Thunderbird.

Jean-Marc
Jean-Marc
more options

Réiteach Roghnaithe

I spent more than half a day looking for topics about that problem... And the solution was in this forum! I will now know where to look, many thanks.