First, test your password by logging in to your provider's webmail.
If that works, it proves you have the correct username and password.
A likely reason for the username/password failing is account corruption.
One thing you should try as a possible quick fix is to delete that corrupted
mail account, restart Windows Mail, then recreate that account.
If that doesn't fix it, more drastic measures will have to be taken.
Which antivirus are you running?
As a minimum, email scanning in the antivirus must be turned off,
although that may not be sufficient to eliminate all bad effects.
In a worst case scenario, your antivirus may need to be uninstalled.
If turning off the email scanning function does not resolve your problem,
consider upgrading to Windows Live Mail, because it is less prone to
suffering bad effects from overly aggressive antivirus programs.
http://download.live.com/wlmail
Email scanning in any antivirus must be disabled, for reasons
explained here:
http://thundercloud.net/infoave/tutorials/email-scanning/index.htm
--
Gary VanderMolen, Microsoft MVP (Mail)
http://mvp.support.microsoft.com/default.aspx/profile/vandermolen
coastbuster said:
i'm in the same position.Unable to send or receive messages for the
(e-mail address removed) account. An incorrect password was entered.
The next time you send or receive messages, you'll be asked to enter your
user name and password for this account.
Server Error: 0x800CCC90
Server Response: -ERR [AUTH] invalid user/password (error 999)
Server: 'mail.btinternet.com'
Windows Live Mail Error ID: 0x800CCC92
Protocol: POP3
Port: 110
Secure(SSL): No
please help me. I have included the info as you wished. Barbara
Gary VanderMolen said:
Right-click on your error message, copy, then paste it into a reply here.
We can't do much troubleshooting without the complete error message.
Incidentally, your Caps Lock key appears to be stuck.
That may prevent a proper login, as well as being perceived negatively
by the readers here.
--
Gary VanderMolen, Microsoft MVP (Mail)
http://mvp.support.microsoft.com/default.aspx/profile/vandermolen
.