Hilfamilybooks Try to Close down computer - wait - then restart computer. Start Thunderbird in Safe Mode by holding down the 'Shift' key while starting the application. http://kb.mozillazine.org/Safe_mode Greetings

Hillfamillybooks Try to use The safe mode options for Thunderbird. https://support.mozilla.org/en-US/kb/troubleshoot-mode-thunderbird Use this option even if this PC is frozen. Try to find out what went wrong or whether the options you want to use or whether they disappear in safe mode or cause problems again outside safe mode. Then make sure these are removed or refreshed and reinstalled. Such as disabling some Security software and/or firewalls or other programs that can be considered an obstacle. Read this down below if you think that your app is still freezing. Try this to if it s possible to 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 If this app not respond read some of this form. http://kb.mozillazine.org/Application_not_responding How often does this occurrence happen? Can I ask? http://kb.mozillazine.org/Standard_diagnostic_-_Thunderbird Greetings

What did you find was causing the problem?