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Why does thunderbird freeze when sending an email?

  • 5 replies
  • 2 have this problem
  • 2 views
  • Last reply by christ1

Nopcam
Nopcam
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I've been all over the forums trying to find a solution to this problem.

I've attempted to compact the folder, repair the folder, turned off email scanning (also removed the anti virus), checked the drafts folder for old emails that are slowing the system down. There are no error codes that I can see, This only seems to be happening with some of the accounts added.

I've been all over the forums trying to find a solution to this problem. I've attempted to compact the folder, repair the folder, turned off email scanning (also removed the anti virus), checked the drafts folder for old emails that are slowing the system down. There are no error codes that I can see, This only seems to be happening with some of the accounts added.

All Replies (5)

christ1
christ1
  • Top 25 Contributor
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Try to start Windows in safe mode with networking enabled. - Win10 https://support.microsoft.com/en-us/help/12376/windows-10-start-your-pc-in-safe-mode

Still in Windows safe mode, start Thunderbird in safe mode. - https://support.mozilla.org/kb/safe-mode

Does the problem go away?

Nopcam
Nopcam Question owner
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Hi,

Thanks for getting back to me, sorry for the late response.

The problem still persists when thunderbird in safe mode on a normal boot.

Booting in Safe mode with networking, the problem no longer happens.

What are the next steps from here?

christ1
christ1
  • Top 25 Contributor
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Windows safe mode disables anti-virus software, which is most likely the culprit.

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

Nopcam
Nopcam Question owner
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Again sorry for the late response. The error keeps happening, even after completely removing anti-virus software. I have no addons on Thunderbird. It seems to only be happening when PDF attachments are added to the email.

christ1
christ1
  • Top 25 Contributor
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The error keeps happening, even after completely removing anti-virus software.

You haven't been asked to do that. Presumably Windows Defender is now your current anti-virus software.

Try to start Windows in safe mode with networking enabled. - Win10 https://support.microsoft.com/en-us/help/12376/windows-10-start-your-pc-in-safe-mode

Still in Windows safe mode, start Thunderbird in safe mode. - https://support.mozilla.org/kb/safe-mode

Does the problem go away?