ERROR_INVALID_PASSWORDNAME - 1216 (0x4C0)
The format of the specified password is invalid.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_INVALID_PASSWORDNAME error indicates that the specified password does not meet the required format or syntax. This error is commonly encountered when attempting to set a new password for user accounts, services, or other security-related operations.
Error Details
This specific error code is returned by various Windows API functions and utilities when an invalid password name is detected. The error suggests that the password provided does not conform to the expected format, which could include issues such as containing illegal characters, being too short, or failing to meet complexity requirements set by the system.
Usage Context
This error can occur in various scenarios where a password needs to be validated or changed. Common contexts include:
- Changing user account passwords through the Windows API functions like
NetUserChangePassword. - Modifying service account credentials using tools like
sc.exeornet start/stopcommands. - Implementing custom security mechanisms that require password validation.
Developer Interpretation
When encountering this error, developers should ensure that the password being used adheres to the following guidelines:
- Length: The password must meet the minimum and maximum length requirements set by the system or application.
- Character Set: The password should not contain characters that are explicitly disallowed by the system security policies. Commonly restricted characters include backslashes, double quotes, and certain control characters.
- Complexity Requirements: Passwords may need to meet complexity rules such as requiring a mix of uppercase and lowercase letters, numbers, or special characters.
Related Errors
ERROR_PASSWORD_MUST_CHANGE(0x14B): Indicates that the password must be changed before it can be used.ERROR_PASSWORD_EXPIRED(0x26A): The account's password has expired and needs to be reset.ERROR_PASSWORD_RESTRICTION(0x132): The user is not allowed to change their own password due to security policies.
FAQ
Q: What does the error mean?
A: The specified password format is invalid according to system or application requirements. Ensure that the password meets all necessary criteria such as length, character set, and complexity rules.
Q: How can I resolve this issue?
A: Verify that the password you are using complies with the system's security policies. Check for any disallowed characters and ensure it meets the required length and complexity standards.
Summary
The ERROR_INVALID_PASSWORDNAME error indicates an invalid format of a specified password. Developers should validate passwords against system requirements to avoid this issue. Proper validation ensures secure and consistent account management in Windows environments.