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.

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.

Cannot forward message

  • 6 fhreagra
  • 1 leis an bhfadhb seo
  • 3 views
  • Freagra is déanaí ó Stewart

more options

New issue for me. Sometimes I get a "Sending Message Failed" See attached.

I'm running Windows 10 with latest updates. Version of TB 38.5.1

I can "fix" it by restarting my computer or, Sometimes by changing the email account I send from (I have four accounts registered in TB)

Sending and receiving new messages is no problem.

Any ideas??

New issue for me. Sometimes I get a "Sending Message Failed" See attached. I'm running Windows 10 with latest updates. Version of TB 38.5.1 I can "fix" it by restarting my computer or, Sometimes by changing the email account I send from (I have four accounts registered in TB) Sending and receiving new messages is no problem. Any ideas??
Attached screenshots

Réiteach roghnaithe

Seems like the problem is scan "Email attachments." Reproducible with turning that feature on and off. I've reported it to McAfee. Happened about 14 months ago and was fixed.

Read this answer in context 👍 0

All Replies (6)

more options

What is your anti-virus software?

more options

McAfee Beta, and yes, I know TB and McAfee have a history of not getting along!

What Anti-virus are the other posters using??

Athraithe ag Stewart ar

more options
I know TB and McAfee have a history of not getting along!

Indeed! https://wiki.mozilla.org/Thunderbird:Testing:Antivirus_Related_Performance_Issues#McAfee

What Anti-virus are the other posters using?

I suppose you'll have to find out yourself what works for you.

more options

I disabled the McAfee ad-on in TB and the problem seems to go away, but it intermittent - stay tuned!

Thanks for you suggestion.

more options

Ask in a McAfee forum what you need to do to get it working properly with Thunderbird. As a general advice, exclude the Thunderbird profile folder from being scanned by McAfee. http://kb.mozillazine.org/Profile_folder_-_Thunderbird

more options

Réiteach Roghnaithe

Seems like the problem is scan "Email attachments." Reproducible with turning that feature on and off. I've reported it to McAfee. Happened about 14 months ago and was fixed.