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

Wannan tattunawa ta zama daɗaɗɗiya. Yi sabuwar tambaya idan ka na bukatar taimako.

Thunderbird hangs at Checking mail server capabilities

  • 1 amsa
  • 5 sa na da wannan matsala
  • 309 views
  • Amsa ta ƙarshe daga alanwbaker

alanwbaker
alanwbaker
more options

I'm running Thunderbird 45.4.0 on Windows 7. Thunderbird has worked great (for years!) until this morning. After starting Thunderbird in normal mode, it hangs at "Connected to <mail server>" or "Checking mail server capabilities". In Thunderbird's safe mode it hangs at "Checking mail server capabilities". Mail stored on the computer is accessible, but attempting to access mail on the server (e.g. sent mail) returns "Unable to connect to your IMAP server..."

All three of my accounts are stuck this way. All accounts work correctly via the ISP's webmail so the issue is not on the server end. I've rebooted the modem and router and turned off the firewall with no effect. Other network capabilities work OK (e.g. http, https, ssh, ftp).

Unsurprisingly, attempting to send an email also fails with "The message could not be sent because the connection to the Outgoing server (SMTP) <server name> was lost in the middle of the transaction. Try again."

Any hints will be appreciated.

I'm running Thunderbird 45.4.0 on Windows 7. Thunderbird has worked great (for years!) until this morning. After starting Thunderbird in normal mode, it hangs at "Connected to <mail server>" or "Checking mail server capabilities". In Thunderbird's safe mode it hangs at "Checking mail server capabilities". Mail stored on the computer is accessible, but attempting to access mail on the server (e.g. sent mail) returns "Unable to connect to your IMAP server..." All three of my accounts are stuck this way. All accounts work correctly via the ISP's webmail so the issue is not on the server end. I've rebooted the modem and router and turned off the firewall with no effect. Other network capabilities work OK (e.g. http, https, ssh, ftp). Unsurprisingly, attempting to send an email also fails with "The message could not be sent because the connection to the Outgoing server (SMTP) <server name> was lost in the middle of the transaction. Try again." Any hints will be appreciated.

Mafitar da aka zaɓa

Fixed. All it needed was the Microsoft solution--reboot.  ;-)

Karanta wannan amsa a matsayinta 👍 0

All Replies (1)

alanwbaker
alanwbaker Mai mallakar tambaya
more options

Zaɓi Mafita

Fixed. All it needed was the Microsoft solution--reboot.  ;-)