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

Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.

thunder bird keeps crashing and running very slow

more options

Im running windows 8.1, windows defender, windows firewall and malwarebytes. Thunderbird email operates very very slowly when trying to perform any action including reading and writing/sending emails and it sometimes comes to a complete halt. I really like thunderbird when it used to work but now its useless Please help

Im running windows 8.1, windows defender, windows firewall and malwarebytes. Thunderbird email operates very very slowly when trying to perform any action including reading and writing/sending emails and it sometimes comes to a complete halt. I really like thunderbird when it used to work but now its useless Please help

All Replies (1)

more options

Your antivirus programs may be part of the trouble. Try restarting your computer in 'safe mode with networking': http://www.howtogeek.com/107511/how-to-boot-into-safe-mode-on-windows-8-the-easy-way/ If Thunderbird performs better then you can adjust your antivirus scanning: http://kb.mozillazine.org/Thunderbird_:_FAQs_:_Anti-virus_Software