ERROR_DS_AUTH_METHOD_NOT_SUPPORTED - 8231 (0x2027)
The requested authentication method is not supported by the server.
Updated: Feb 21, 2026
Technical Meaning
The error code ERROR_DS_AUTH_METHOD_NOT_SUPPORTED indicates that the server does not recognize or support the authentication method requested by the client. This can occur in scenarios where a client attempts to authenticate using a protocol or mechanism that is not recognized or enabled on the server side.
Error Details
- Error Name: ERROR_DS_AUTH_METHOD_NOT_SUPPORTED
- Numeric Code: 8231 (0x2027)
- Short Description: The requested authentication method is not supported by the server.
This error typically arises in directory services operations, such as LDAP or Active Directory, where the client and server must agree on a mutually supported authentication mechanism. If the server does not support the specified authentication method, this error will be returned to indicate that the operation cannot proceed.
Usage Context
The ERROR_DS_AUTH_METHOD_NOT_SUPPORTED is relevant in scenarios involving directory services operations, particularly those requiring secure or specific forms of authentication. This includes but is not limited to:
- LDAP bind operations
- Kerberos authentication
- NTLM authentication
Developer Interpretation
When encountering this error, developers should ensure that the client and server are configured to support the same authentication methods. Common causes include:
- Incorrectly specified or unsupported authentication protocols in client requests.
- Server configuration issues where certain authentication mechanisms are disabled or not supported.
- Mismatched security settings between the client and server environments.
Developers should review the client's request parameters, confirm that the required authentication methods are enabled on the server, and ensure that both the client and server are configured to use compatible authentication protocols. This may involve checking configuration files, registry settings, or service properties related to directory services.
Related Errors
ERROR_DS_NO_ATTRIBUTE_OR_VALUE(1769)ERROR_DS_INVALID_DN_SYNTAX(1832)ERROR_DS_DRA_SCHEMA_MISMATCH(2045)
These errors can provide additional context when troubleshooting authentication issues in directory services.
FAQ
Q: What does the error code 8231 mean?
A: The error code 8231, or ERROR_DS_AUTH_METHOD_NOT_SUPPORTED, indicates that the server does not recognize or support the requested authentication method.
Q: How can I resolve this issue?
A: Ensure that both the client and server are configured to use compatible authentication protocols. Review configuration settings and enable any required mechanisms on the server side.
Summary
The ERROR_DS_AUTH_METHOD_NOT_SUPPORTED error code (8231) is a specific error indicating that the requested authentication method is not supported by the server. This can occur in directory services operations where client and server configurations must be compatible. Developers should ensure proper configuration of both client and server to resolve this issue.