Thunderbird no longer pops up a window for my password when i open it. This has been going on just since the last update. I am using Windows 7. There are no passwords to delete in passwords under security. I turned off my firewall and email related functions on my antivirus (Avast) which did no good. These are POP accounts for Earthlink and Yahoo. There has been no problem with them for several years. The servers are being connected to. I get an error message that says the server returned a message, but the message isn't displayed after the colon. Thanks for any help.