EVERYtime I click "send" or "get Mail", I have to click twice. The 1st time with "send" produces an error, the 1st time with "get mail", nothing happens.

Question

I have to select "send" or "get mail" twice in order for Thunderbird to do what I want. When I click the 1st time when sending, I ALWAYS get an authentication error. I click again and it sends the message without error. When I click "get mail" nothing happens. When I click it again, it checks & retrieves mail.

Answer 1

That sounds like an anti virus issue.
Restart the operating system in '''[http://en.wikipedia.org/wiki/Safe_mode safe mode with Networking]'''. This loads only the very basics needed to start your computer while enabling an Internet connection. Click on your operating system for instructions on how to start in safe mode: [http://windows.microsoft.com/en-us/windows-8/windows-startup-settings-including-safe-mode Windows 8], [http://windows.microsoft.com/en-us/windows/start-computer-safe-mode#start-computer-safe-mode=windows-7 Windows 7], [http://windows.microsoft.com/en-us/windows/start-computer-safe-mode#start-computer-safe-mode=windows-vista Windows Vista], [http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/boot_failsafe.mspx?mfr=true" Windows XP], [http://support.apple.com/kb/ht1564 OSX] and see if the double clicking stops.