I am new on the forum so I'm not sure if this has been answered previously.

[kenneyhavasu]

Everytime I try to go to my Windows Mail, I get a message to log in with username and password. It will not accept either. I get this message:
Account: 'pop.att.yahoo.com', Server: 'pop.att.yahoo.com', Protocol: POP3, Server Response: '-ERR [AUTH] invalid user/password', Port: 995, Secure(SSL): Yes, Server Error: 0x800CCC90, Error Number: 0x800CCC92.

 

[Silverhazesurfer]

Account: 'pop.att.yahoo.com', Server: 'pop.att.yahoo.com', Protocol: POP3, Server Response: '-ERR [AUTH] invalid user/password', Port: 995, Secure(SSL): Yes, Server Error: 0x800CCC90, Error Number: 0x800CCC92.

Have you tried using this user name and password on the web interface of your email provider? According to the error, your username and password are being input incorrectly. Either you are typing it wrong, have the caps lock on, or have forgotten which one to use for that account.