The new password you enter must match the password policies determined by login authentication min-password-length, login authentication min-password-upper-chars, login authentication min-password-lower-chars, login authentication min-password-digit-chars, and login authentication min-password-special-chars. Ensure that the password does not contain the username.
For the new password to take effect, run the copy running-config startup-config command.
Note:
This command applies only to local user accounts. It does not apply to a Services account or a remote Radius account.