Two days ago my Thunderbird was working perfectly. Since then, something happened and I have no idea what it could have been. When I go to the CenturyLink ISP website, I can get my email. When Thunderbird worked two days ago, it could get my messages from 4 different email accounts at centurylink.net with Thunderbird. Now, when I attempt to connect it says "Login to server pop.centurylink.net with username khalmeigh@centurylink.net failed." It offers the option to enter a password, which I tried repeatedly. Same thing. No ability to retrieve email, and again, nothing changed. If I go to centurylink.net, I can retrieve my email. There is no problem with the email address, nor is there a problem with the password, or the host. I've been using this program for a year and it suddenly stopped working. There is nothing wrong with centurylink.net.