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

Wo archive tread sia. Meɖekuku bia biabia yeye ne ehia kpeɖeŋu.

Why does Thunderbird slow down and freeze up when composing email?

  • 2 ŋuɖoɖowo
  • 1 masɔmasɔ sia le esi
  • 12 views
  • Nuɖoɖo mlɔetɔ Steve14850

wrgarrett45
wrgarrett45
more options

Thunderbird 68.7.0 Windows 10 Pro, 16Gb Ram, Intel 3.1Ghz, Microsoft Defender and MalwareBytes

This problem just started within the last 30 days.

When composing emails, at times Thunderbird will freeze, stop displaying my letters typed and when it returns to operation, it's like slow motion. One letter at a time appears at the rate of about 1 per second, or 5 seconds for a 5 letter word.

I keep my folders compacted and only very important emails are stored over 90 days.

Thunderbird 68.7.0 Windows 10 Pro, 16Gb Ram, Intel 3.1Ghz, Microsoft Defender and MalwareBytes This problem just started within the last 30 days. When composing emails, at times Thunderbird will freeze, stop displaying my letters typed and when it returns to operation, it's like slow motion. One letter at a time appears at the rate of about 1 per second, or 5 seconds for a 5 letter word. I keep my folders compacted and only very important emails are stored over 90 days.

All Replies (2)

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

Start *Windows'* 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-thunderbird

Does problem go away? Please post to let us know results.

Steve14850
Steve14850
more options

This sounds similar to the problem I'm having. I'm running the latest version of TB on a Lenovo Thinkpad with Avast virus protection. TB frequently hangs while I'm composing email and displays the "not responding" error message.