ERROR_NO_SUCH_USER - 1317 (0x525)

Technical Meaning

The error code ERROR_NO_SUCH_USER with the numeric value 1317 and hexadecimal representation 0x525 indicates that a specified user account does not exist in the system.

Error Details

This error is typically returned by various Windows APIs when an attempt to access or authenticate using a non-existent user account fails. The specific context can vary depending on the API call, but it generally signifies that the provided username is invalid or has not been created within the system's user database.

Usage Context

The error ERROR_NO_SUCH_USER may be encountered in several scenarios:

• User Authentication: During login attempts where a non-existent account is specified.
• Access Control: When attempting to access resources that require specific user permissions, and the user does not exist.
• Account Management Operations: In operations such as adding or removing users from groups, where an invalid username is provided.

Developer Interpretation

Developers should interpret this error code as a signal that the specified user account is not recognized by the system. This can be due to several reasons, including incorrect input parameters, misconfiguration, or issues with the underlying user database.

Common Causes

• Invalid Username: The username provided does not match any existing accounts in the system.
• User Account Deletion: The account was deleted after an operation was initiated but before completion.
• Typographical Errors: Mistakes in typing the username during input or configuration.

Related Errors

• ERROR_INVALID_USER_NAME (1326, 0x522): Indicates that a specified user name is invalid and cannot be used for authentication.
• ERROR_ACCOUNT_DISABLED (1326, 0x522): Suggests that the account exists but is disabled.

FAQ

Q: What does ERROR_NO_SUCH_USER mean?

A: It indicates that a specified user account does not exist in the system.

Q: How can I resolve this error?

A: Ensure that the username provided is correct and matches an existing account. Verify the configuration and ensure that all necessary accounts are present before performing operations that require specific user permissions.

Summary

The ERROR_NO_SUCH_USER (1317, 0x525) error code in Windows indicates that a specified user account does not exist. This can occur during various system operations such as authentication and access control. Developers should handle this error by validating input parameters and ensuring the correct configuration of user accounts.