You must meet the complexity requirements for the password. In other words, you can't have a simple password of "password" anymore.
Passwords must contain characters from three of the following four categories:
* English uppercase characters (A through Z).
* English lowercase characters (a through z).
* Base 10 digits (0 through 9).
* Non-alphabetic characters (for example, !, $, #, %).
So, instead of "password", try "Pa$$w0rd."