By selecting the Require Encrypted Password check box, you are
precluding the use of cleartext authentication. Microsoft supports several encrypted password
options, including Shiva Password Authentication Protocol (SPAP), Data Encryption Standard
(DES), Challenge Handshake Authentication Protocol (CHAP), and MS-CHAP. MS-CHAP is
based on Rivest-Shamir-Adleman (RSA) MD4 (Message Digest type 4). On Windows NT, this is
enhanced to MD5 with Service Pack 3 or greater, and is standard in newer versions of Windows.
Remember when choosing your password that passwords are generally
case sensitive.