The following table lists the LDAP error messages and their corresponding Win32 error codes for ADSI.
| ADSI Error Value | LDAP message | Win32 message | Description | 
| 0L | LDAP_SUCCESS | NO_ERROR | Operation succeeded. | 
| 0x80070005L | LDAP_INSUFFICIENT_RIGHTS | ERROR_ACCESS_DENIED | The user has insufficient access right. | 
| 0x80070008L | LDAP_NO_MEMORY | ERROR_NOT_ENOUGH_MEMORY | The system is out of memory. | 
| 0x8007001fL | LDAP_OTHER | ERROR_GEN_FAILURE | Unknown error occurred. | 
| 0x800700eaL | LDAP_PARTIAL_RESULTS | ERROR_MORE_DATA | Partial results and referrals received. | 
| 0x800700eaL | LDAP_MORE_RESULTS_TO_RETURN | ERROR_MORE_DATA | More results are to be returned. | 
| 0x800704c7L | LDAP_USER_CANCELLED | ERROR_CANCELLED | The user has cancelled the operation. | 
| 0x800704c9L | LDAP_CONNECT_ERROR | ERROR_CONNECTION_REFUSED | Cannot establish the connection. | 
| 0x8007052eL | LDAP_INVALID_CREDENTIALS | ERROR_LOGON_FAILURE | The supplied credential is invalid. | 
| 0x800705b4L | LDAP_TIMEOUT | ERROR_TIMEOUT | The search was timed out. | 
| 0x80071392L | LDAP_ALREADY_EXISTS | ERROR_OBJECT_ALREADY_EXISTS | The object already exists. | 
| 0x8007200aL | LDAP_NO_SUCH_ATTRIBUTE | ERROR_DS_NO_ATTRIBUTE_OR_VALUE | Requested attribute does not exist. | 
| 0x8007200bL | LDAP_INVALID_SYNTAX | ERROR_DS_INVALID_ATTRIBUTE_SYNTAX | The syntax is invalid. | 
| 0x8007200cL | LDAP_UNDEFINED_TYPE | ERROR_DS_ATTRIBUTE_TYPE_UNDEFINED | Type is not defined. | 
| 0x8007200dL | LDAP_ATTRIBUTE_OR_VALUE_EXISTS | ERROR_DS_ATTRIBUTE_OR_VALUE_EXISTS | The attribute exists or the value has been assigned. | 
| 0x8007200eL | LDAP_BUSY | ERROR_DS_BUSY | The server is busy. | 
| 0x8007200fL | LDAP_UNAVAILABLE | ERROR_DS_UNAVAILABLE | The server is not available. | 
| 0x80072014L | LDAP_OBJECT_CLASS_VIOLATION | ERROR_DS_OBJ_CLASS_VIOLATION | There was an object class violation. | 
| 0x80072015L | LDAP_NOT_ALLOWED_ON_NONLEAF | ERROR_DS_CANT_ON_NON_LEAF | Operation is not allowed on a non leaf object. | 
| 0x80072016L | LDAP_NOT_ALLOWED_ON_RDN | ERROR_DS_CANT_ON_RDN | Operation is not allowed on RDN. | 
| 0x80072017L | LDAP_NO_OBJECT_CLASS_MODS | ERROR_DS_CANT_MOD_OBJ_CLASS | Cannot modify object class. | 
| 0x80072020L | LDAP_OPERATIONS_ERROR | ERROR_DS_OPERATIONS_ERROR | Operations error occurred. | 
| 0x80072021L | LDAP_PROTOCOL_ERROR | ERROR_DS_PROTOCOL_ERROR | Protocol error occurred. | 
| 0x80072022L | LDAP_TIMELIMIT_EXCEEDED | ERROR_DS_TIMELIMIT_EXCEEDED | Time limit has exceeded | 
| 0x80072023L | LDAP_SIZELIMIT_EXCEEDED | ERROR_DS_SIZELIMIT_EXCEEDED | Size limit has exceeded | 
| 0x80072024L | LDAP_ADMIN_LIMIT_EXCEEDED | ERROR_DS_ADMIN_LIMIT_EXCEEDED | Administration limit on the server has exceeded. | 
| 0x80072025L | LDAP_COMPARE_FALSE | ERROR_DS_COMPARE_FALSE | Compare yielded FALSE. | 
| 0x80072026L | LDAP_COMPARE_TRUE | ERROR_DS_COMPARE_TRUE | Compare yielded TRUE. | 
| 0x80072027L | LDAP_AUTH_METHOD_NOT_SUPPORTED | ERROR_DS_AUTH_METHOD_NOT_SUPPORTED | The authentication method is not supported. | 
| 0x80072028L | LDAP_STRONG_AUTH_REQUIRED | ERROR_DS_STRONG_AUTH_REQUIRED | Strong authentication is required. | 
| 0x80072029L | LDAP_INAPPROPRIATE_AUTH | ERROR_DS_INAPPROPRIATE_AUTH | Authentication is inappropriate. | 
| 0x8007202aL | LDAP_AUTH_UNKNOWN | ERROR_DS_AUTH_UNKNOWN | Unknown authentication error occurred. | 
| 0x8007202bL | LDAP_REFERRAL | ERROR_DS_REFERRAL | Referral | 
| 0x8007202cL | LDAP_UNAVAILABLE_CRIT_EXTENSION | ERROR_DS_UNAVAILABLE_CRIT_EXTENSION | Critical extension is unavailable. | 
| 0x8007202dL | LDAP_CONFIDENTIALITY_REQUIRED | ERROR_DS_CONFIDENTIALITY_REQUIRED | Confidentiality is required. | 
| 0x8007202eL | LDAP_INAPPROPRIATE_MATCHING | ERROR_DS_INAPPROPRIATE_MATCHING | There was an inappropriate matching. | 
| 0x8007202fL | LDAP_CONSTRAINT_VIOLATION | ERROR_DS_CONSTRAINT_VIOLATION | There was a constrain violation. | 
| 0x80072030L | LDAP_NO_SUCH_OBJECT | ERROR_DS_NO_SUCH_OBJECT | Object does not exist. | 
| 0x80072031L | LDAP_ALIAS_PROBLEM | ERROR_DS_ALIAS_PROBLEM | The alias is invalid. | 
| 0x80072032L | LDAP_INVALID_DN_SYNTAX | ERROR_DS_INVALID_DN_SYNTAX | The distinguished name has an invalid syntax. | 
| 0x80072033L | LDAP_IS_LEAF | ERROR_DS_IS_LEAF | The object is a leaf. | 
| 0x80072034L | LDAP_ALIAS_DEREF_PROBLEM | ERROR_DS_ALIAS_DEREF_PROBLEM | Cannot dereference the alias. | 
| 0x80072035L | LDAP_UNWILLING_TO_PERFORM | ERROR_DS_UNWILLING_TO_PERFORM | The server is unwilling to perform. | 
| 0x80072036L | LDAP_LOOP_DETECT | ERROR_DS_LOOP_DETECT | Loop was detected. | 
| 0x80072037L | LDAP_NAMING_VIOLATION | ERROR_DS_NAMING_VIOLATION | There was a naming violation. | 
| 0x80072038L | LDAP_RESULTS_TOO_LARGE | ERROR_DS_OBJECT_RESULTS_TOO_LARGE | Results returned are too large. | 
| 0x80072039L | LDAP_AFFECTS_MULTIPLE_DSAS | ERROR_DS_AFFECTS_MULTIPLE_DSAS | Multiple directory service agents are affected. | 
| 0x8007203aL | LDAP_SERVER_DOWN | ERROR_DS_SERVER_DOWN | Cannot contact the LDAP server. | 
| 0x8007203bL | LDAP_LOCAL_ERROR | ERROR_DS_LOCAL_ERROR | Local error occurred. | 
| 0x8007203cL | LDAP_ENCODING_ERROR | ERROR_DS_ENCODING_ERROR | Encoding error occurred. | 
| 0x8007203dL | LDAP_DECODING_ERROR | ERROR_DS_DECODING_ERROR | Decoding error occurred. | 
| 0x8007203eL | LDAP_FILTER_ERROR | ERROR_DS_FILTER_UNKNOWN | The search filter is bad. | 
| 0x8007203fL | LDAP_PARAM_ERROR | ERROR_DS_PARAM_ERROR | A bad parameter was passed to a routine. | 
| 0x80072040L | LDAP_NOT_SUPPORTED | ERROR_DS_NOT_SUPPORTED | The feature is not supported. | 
| 0x80072041L | LDAP_NO_RESULTS_RETURNED | ERROR_DS_NO_RESULTS_RETURNED | Results are not returned. | 
| 0x80072042L | LDAP_CONTROL_NOT_FOUND | ERROR_DS_CONTROL_NOT_FOUND | The control was not found. | 
| 0x80072043L | LDAP_CLIENT_LOOP | ERROR_DS_CLIENT_LOOP | Client loop was detected. | 
| 0x80072044L | LDAP_REFERRAL_LIMIT_EXCEEDED | ERROR_DS_REFERRAL_LIMIT_EXCEEDED | The referral limit has exceeded. |