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

Suddenly I am having a HUGE problem with slow response.

more options

Thunderbird has worked like a charm for over a year. Now, all of a sudden, it keeps hanging up when I try to write or send an email. I haven't changed my anti-virus software which is MS Defender. I can't think of anything else I could have done to cause the problem. For a while, I couldn't open MS Word attachments. That seems to be solved now for some unknown reason. I really like this email program when it works, but I need more dependability. Is anyone else having this problem?

Thunderbird has worked like a charm for over a year. Now, all of a sudden, it keeps hanging up when I try to write or send an email. I haven't changed my anti-virus software which is MS Defender. I can't think of anything else I could have done to cause the problem. For a while, I couldn't open MS Word attachments. That seems to be solved now for some unknown reason. I really like this email program when it works, but I need more dependability. Is anyone else having this problem?

All Replies (6)

more options
more options

No. That didn't change anything. I'm getting incredibly frustrated. Has something changed with Thunderbird?

more options

Can you confirm you did start Windows in safe mode?

more options

No. I'm not sure. I got a little bit scared of what it was asking me to do. I'll google the process and try it again. I don't want to lose my data.

more options

You've been given specific instructions what steps to try. None of these steps would cause any data loss.

If you then reply that those instructions didn't work, even though you didn't even try them, we won't make any progress here.

If you have any specific questions, or are unsure what to do, please ask. But be honest and tell the truth.

more options

I find that fairly insulting. I've told the truth. I don't know if I followed the exact correct steps and I pointed that out. As far as I'm concerned, this conversation is over.