Wrong information specified.
This is a dialup networking/connection with your ISP issue.
Many possible causes:
Dial up networking settings have changed, check to make sure you didn't
change anything. This could be as simple as your ISP changing from PAP to
CHAP authentication and not informing you, or possibly you need to start
using a domain name, or realm your username. etc... Check your connection
script if you are using one and also doublecheck typing in your username
If you have been playing around in your dial up networking connectoid,
create a new connectoid with the proper settings and try that. If this
still doesn't work, uninstall dial up networking and reinstall it.
Also check with your ISP to see if they changed any PPP or connection
settings, or if they are having a radius/authentication issues for your
NAS (device you are dialing into).