ERROR_ILL_FORMED_PASSWORD - 1324 (0x52C)

Unable to update the password. The value provided for the new password contains values that are not allowed in passwords.

Updated: Feb 21, 2026

Technical Meaning

The error code ERROR_ILL_FORMED_PASSWORD with the numeric value 1324 and hexadecimal representation 0x52C is returned when an attempt to update a password fails due to invalid characters or formatting in the new password.

Error Details

This specific error indicates that the provided new password contains values that are not allowed according to the system's password policy. The policy may restrict certain character sets, length requirements, or other constraints on passwords.

Usage Context

This error is typically encountered when using Windows API functions related to user account management and password changes. Common scenarios include calls such as NetUserChangePassword or similar functions that require a new password to be provided for updating an existing one.

Developer Interpretation

Developers should ensure that the new password adheres to the system's defined password policy before attempting to update it. This includes checking character sets, length requirements, and any other constraints enforced by the operating system or organizational policies.

Related Errors

  • ERROR_PASSWORD_RESTRICTION (1306) - Indicates a general password restriction issue but does not specify ill-formed characters.
  • ERROR_INVALID_PARAMETER (1289) - A more generic error that could apply if any parameter is invalid, including the new password.

FAQ

Q: What causes this error?

A: The error occurs when the new password provided contains characters or formats not allowed by the system's password policy.

Q: How can I resolve this issue?

A: Ensure that the new password meets all requirements specified in the system's password policy, including character sets and length constraints.

Summary

The ERROR_ILL_FORMED_PASSWORD error indicates a specific violation of the password policy when attempting to update a user's password. Developers should validate input parameters against the system's defined policies before making API calls to avoid this error.