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Thunderbird quit working totally this morning; I have 4 email accts and nothing comes or goes

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I have 3 IMAP accounts - subject title line downloads into Thunderbird with blank message; I have 1 POP account - it won't even download a subject line. I am not able to send anything. Have had Thunderbird for years and this never happened. I'm not that email savy, so I need help.

I have 3 IMAP accounts - subject title line downloads into Thunderbird with blank message; I have 1 POP account - it won't even download a subject line. I am not able to send anything. Have had Thunderbird for years and this never happened. I'm not that email savy, so I need help.

Chosen solution

I turned off the Avast email shield and all is working perfectly - thanks to all of you who were kind enough to explain things! I thought I was going to have to give up Thunderbird, and I really didn't want that to happen! Thanks again!

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  • User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:68.0) Gecko/20100101 Firefox/68.0

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christ1
  • Top 25 Contributor
2151 solutions 15693 answers
I have 3 IMAP accounts - subject title line downloads into Thunderbird with blank message

For all 3 IMAP accounts?

I have 1 POP account - it won't even download a subject line.

See https://support.mozilla.org/kb/cannot-receive-messages

I am not able to send anything.

See https://support.mozilla.org/kb/cannot-send-messages

<blockquote> I have 3 IMAP accounts - subject title line downloads into Thunderbird with blank message </blockquote> For all 3 IMAP accounts? <blockquote> I have 1 POP account - it won't even download a subject line. </blockquote> See https://support.mozilla.org/kb/cannot-receive-messages <blockquote> I am not able to send anything. </blockquote> See https://support.mozilla.org/kb/cannot-send-messages
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Question owner

yes - all 3. I tried deleting one account from Thunderbird and reinstalling it, but that didn't help.

yes - all 3. I tried deleting one account from Thunderbird and reinstalling it, but that didn't help.
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Toad-Hall
  • Top 10 Contributor
1709 solutions 11394 answers

Test: Start computer in 'Safe Mode with Networking' mode. Start Thunderbird Report back on results.

Test: Start computer in 'Safe Mode with Networking' mode. Start Thunderbird Report back on results.
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Question owner

I did as you said - started computer in Safe Mode with Networking and Thunderbird was fine - could send and receive messages. I put it back in normal mode and now nothing works again.

I did as you said - started computer in Safe Mode with Networking and Thunderbird was fine - could send and receive messages. I put it back in normal mode and now nothing works again.
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christ1
  • Top 25 Contributor
2151 solutions 15693 answers

Windows safe mode disables anti-virus software, which is most likely the culprit. These are some generic suggestions to avoid problems with anti-virus software.

Create an exception in your anti-virus software for the Thunderbird profile folder, so that the anti-virus real-time scanner will not scan it. http://kb.mozillazine.org/Profile_folder_-_Thunderbird

Don't let your anti-virus software scan incoming and outgoing messages.

Don't let your anti-virus software scan attachments.

Don't let your anti-virus software intercept your secure connection to the server.

Remove any add-ons your anti-virus software may have installed in Thunderbird.

Keep it working. http://kb.mozillazine.org/Keep_it_working_-_Thunderbird

And last but not least, backup your Thunderbird profile on a regular basis. https://support.mozilla.org/kb/profiles-where-thunderbird-stores-user-data#w_backing-up-a-profile

Windows safe mode disables anti-virus software, which is most likely the culprit. These are some generic suggestions to avoid problems with anti-virus software. Create an exception in your anti-virus software for the Thunderbird profile folder, so that the anti-virus real-time scanner will not scan it. http://kb.mozillazine.org/Profile_folder_-_Thunderbird Don't let your anti-virus software scan incoming and outgoing messages. Don't let your anti-virus software scan attachments. Don't let your anti-virus software intercept your secure connection to the server. Remove any add-ons your anti-virus software may have installed in Thunderbird. Keep it working. http://kb.mozillazine.org/Keep_it_working_-_Thunderbird And last but not least, backup your Thunderbird profile on a regular basis. https://support.mozilla.org/kb/profiles-where-thunderbird-stores-user-data#w_backing-up-a-profile
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Question owner

I found the Thunderbird profile folder - how do I create an exception?

I found the Thunderbird profile folder - how do I create an exception?
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christ1
  • Top 25 Contributor
2151 solutions 15693 answers

Helpful Reply

You'd need to check with your anti-virus software vendor. Presumably there is a support forum for it as well. And this article may help. https://wiki.mozilla.org/Thunderbird:Testing:Antivirus_Related_Performance_Issues

You'd need to check with your anti-virus software vendor. Presumably there is a support forum for it as well. And this article may help. https://wiki.mozilla.org/Thunderbird:Testing:Antivirus_Related_Performance_Issues
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Chosen Solution

I turned off the Avast email shield and all is working perfectly - thanks to all of you who were kind enough to explain things! I thought I was going to have to give up Thunderbird, and I really didn't want that to happen! Thanks again!

I turned off the Avast email shield and all is working perfectly - thanks to all of you who were kind enough to explain things! I thought I was going to have to give up Thunderbird, and I really didn't want that to happen! Thanks again!
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