| Directory Services |
The following table lists error codes encountered in LDAP applications. For more information about error handling, see the set of links following this table.
| Code | Value | Description |
|---|---|---|
| LDAP_ADMIN_LIMIT_EXCEEDED | 0x0b | Administration limit on the server was exceeded. |
| LDAP_AFFECTS_MULTIPLE_DSAS | 0x47 | Multiple directory service agents are affected. |
| LDAP_ALIAS_DEREF_PROBLEM | 0x24 | Cannot dereference the alias. |
| LDAP_ALIAS_PROBLEM | 0x21 | The alias is invalid. |
| LDAP_ALREADY_EXISTS | 0x44 | The object already exists. |
| LDAP_ATTRIBUTE_OR_VALUE_EXISTS | 0x14 | The attribute exists or the value has been assigned. |
| LDAP_AUTH_METHOD_NOT_SUPPORTED | 0x07 | The authentication method is not supported. To determine the authentication methods supported by an Active Directory server, retrieve the SupportedSASLMechanisms property of rootDSE. For more information, see Serverless Binding and RootDSE. |
| LDAP_AUTH_UNKNOWN | 0x56 | Unknown authentication error occurred. |
| LDAP_BUSY | 0x33 | The server is busy. |
| LDAP_CLIENT_LOOP | 0x60 | Client loop was detected. |
| LDAP_COMPARE_FALSE | 0x05 | For ldap_compare_ext_s and ldap_compare_s, this message is returned if the function succeeds, and the attribute and known values do not match. |
| LDAP_COMPARE_TRUE | 0x06 | For ldap_compare_ext_s and ldap_compare_s, this message is returned if the function succeeds, and the attribute and known values match. |
| LDAP_CONFIDENTIALITY_REQUIRED | 0x0d | Confidentiality is required. |
| LDAP_CONNECT_ERROR | 0x5b | Cannot establish the connection. |
| LDAP_CONSTRAINT_VIOLATION | 0x13 | There was a constraint violation. |
| LDAP_CONTROL_ERROR | 0x4c | This code is returned to signal that an error occurred in processing a critical control. The response control, if present, may contain a more specific error code, but this is dependent on the control being used. Supported in Windows Server 2003 family. |
| LDAP_CONTROL_NOT_FOUND | 0x5d | The ldap function ( ldap_parse_page_control, ldap_parse_sort_control, or ldap_parse_vlv_control) did not find the specified control. |
| LDAP_DECODING_ERROR | 0x54 | Decoding error occurred. |
| LDAP_ENCODING_ERROR | 0x53 | Encoding error occurred. |
| LDAP_FILTER_ERROR | 0x57 | The search filter is bad. |
| LDAP_INAPPROPRIATE_AUTH | 0x30 | Authentication is inappropriate. |
| LDAP_INAPPROPRIATE_MATCHING | 0x12 | There was an inappropriate matching. |
| LDAP_INSUFFICIENT_RIGHTS | 0x32 | The user has insufficient access rights. |
| LDAP_INVALID_CREDENTIALS | 0x31 | The supplied credential is invalid. |
| LDAP_INVALID_DN_SYNTAX | 0x22 | The distinguished name has an invalid syntax. |
| LDAP_INVALID_SYNTAX | 0x15 | The syntax is invalid. |
| LDAP_IS_LEAF | 0x23 | The object is a leaf. |
| LDAP_LOCAL_ERROR | 0x52 | Local error occurred. If this error occurs during a binding operation, for more information, see ldap_bind_s. |
| LDAP_LOOP_DETECT | 0x36 | The chain of referrals has looped back to a referring server. |
| LDAP_MORE_RESULTS_TO_RETURN | 0x5f | More results are to be returned. |
| LDAP_NAMING_VIOLATION | 0x40 | There was a naming violation. |
| LDAP_NO_MEMORY | 0x5a | The system is out of memory. |
| LDAP_NO_OBJECT_CLASS_MODS | 0x45 | Cannot modify object class. |
| LDAP_NO_RESULTS_RETURNED | 0x5e | Results are not returned. |
| LDAP_NO_SUCH_ATTRIBUTE | 0x10 | Requested attribute does not exist. |
| LDAP_NO_SUCH_OBJECT | 0x20 | Object does not exist. |
| LDAP_NOT_ALLOWED_ON_NONLEAF | 0x42 | Operation is not allowed on a non leaf object. |
| LDAP_NOT_ALLOWED_ON_RDN | 0x43 | Operation is not allowed on RDN. |
| LDAP_NOT_SUPPORTED | 0x5c | The feature is not supported. |
| LDAP_OBJECT_CLASS_VIOLATION | 0x41 | There was an object class violation. |
| LDAP_OPERATIONS_ERROR | 0x01 | Operations error occurred. |
| LDAP_OTHER | 0x50 | Unknown error occurred. |
| LDAP_PARAM_ERROR | 0x59 | A bad parameter was passed to a routine. |
| LDAP_PARTIAL_RESULTS | 0x09 | Partial results and referrals received. |
| LDAP_PROTOCOL_ERROR | 0x02 | Protocol error occurred. |
| LDAP_REFERRAL | 0x0a | A referral was returned from the server. |
| LDAP_REFERRAL_LIMIT_EXCEEDED | 0x61 | The referral limit has been exceeded. |
| LDAP_REFERRAL_V2 | 0x09 | A referral was returned from the server. |
| LDAP_RESULTS_TOO_LARGE | 0x46 | Results returned are too large. |
| LDAP_SERVER_DOWN | 0x51 | Cannot contact the LDAP server. |
| LDAP_SIZELIMIT_EXCEEDED | 0x04 | Size limit was exceeded |
| LDAP_STRONG_AUTH_REQUIRED | 0x08 | Strong authentication is required. |
| LDAP_SUCCESS | 0x00 | The call completed successfully. |
| LDAP_TIMELIMIT_EXCEEDED | 0x03 | Time limit, set by the server side time limit parameter, was exceeded. |
| LDAP_TIMEOUT | 0x55 | The search was aborted due to exceeding the limit of the client side timeout parameter. |
| LDAP_UNAVAILABLE | 0x34 | The server is unavailable. |
| LDAP_UNAVAILABLE_CRIT_EXTENSION | 0x0c | The control is critical and the server does not support the control. |
| LDAP_UNDEFINED_TYPE | 0x11 | Type is not defined. |
| LDAP_UNWILLING_TO_PERFORM | 0x35 | The server is not willing to handle directory requests. |
| LDAP_USER_CANCELLED | 0x58 | The user has cancelled the operation. |
| LDAP_VIRTUAL_LIST_VIEW_ERROR | 0x4C | An error occured when attempting to perform a requested Virtual List View operation. A detailed error code is returned in the ldctl_value field of the LDAP_CONTROL_VLVRESPONSE control. |
Understanding Return Values, ldap_err2string, LdapGetLastError, LdapMapErrorToWin32, ldap_result2error