This error occurs when you’re running Windows 2000 Service Pack 1 (SP1) and you connect to an MIT realm and select Change Password from the Security dialog box (Ctrl+Alt+Del). (An MIT realm is a Kerberos realm used for authentication in the same way that Win2K uses Kerberos 5 for authentication.) The full error you’ll receive is
“Your password must be at least 18770 characters and cannot repeat any of your previous 30689 passwords. Please type a different password. Type a password that meets these requirements in both text boxes.”
To correct this problem, contact Microsoft Support Services and request an updated msgina.dll file (version 5.0.2195.3351 or later).