first domain is not available
second user name and password may be wrong
third system is not join the domain.
four user name is not in ADC server
five network cable is unpluge
or
un authories user name
Smart card
If the device or the network requires a password you must supply a user name and password combination; it can't be skipped.
"Host" could mean your domain name provider, your webspace provider, etc. A host name is the name of your "Host".
winlogon.exe
Enter user name and password.
Someone might not want their name in an obituary if they do not wish it to be known that they are related to the person who died. This might be for family reasons or work reasons.
UPN: User Principal Name The UPN is composed of the user logon name and the UPN suffix joined by the @ sign. For example test@da.com here "test" is the user logon name and "da.com" is the UPN suffix.
go to a PC shop and get it fixed
go to control panel. --> network connections... --> remove windows logon from there.. and restart the computer
When prompted, enter your user name and your password.
Account
Remember what your username and password were 'cause changing your workgroup isn't going to affect your login. If you had your computer connected at work and the computer was using your network logon to allow you access to the computer, then the problems is that the office network is no longer available. You may be able to select Options/Advanced at the login screen and then select "Login to this computer", where the domain is shown.