Only Administrators can change their passwords from the command line. The DOS screen below shows how to do it with the net user command:
C:\>net user Administrator *
Type a password for the user:
Retype the password to confirm:
The command completed successfully.
An Administrator can also use the following variation of the net user command:
C:\>net user Administrator newpassword
This variation eliminates the need to type the password twice, and you can use it from a batch file. If users who aren't Administrators try to change their passwords with this command, they receive the following error message:
System error 5 has occurred. Access is denied