When I did the down load to Firefox it took out the ability to send e-mails out on my Windows e-mail program. I receive the e-mails coming in to Windows from att.net who always was the place incoming e-mails are first received and held then when I go on my e-mail Windows program everything comes in and when I send it goes out or Windows e-mail. Now it won't send. Error message says e-mail server authentication setting might not be correct for outgoing e-mail SMTP server. I did not set it up so have not idea how to do this or why it has changed using Firefox instead of Explorer. merryandallan.