Active Directory Authentication Error Codes

When authentication fails while using Active Directory , Active Directory returns its own error codes to indicate 
the reason for the failure; you must retrieve and handle or display these errors appropriately. 

Below are some of the most common errors you may receive, including example error messages and reasons for the error.
525 - user not found
52e - invalid credentials
530 - not permitted to logon at this time
532 - password expired
533 - account disabled
701 - account expired
773 - user must reset password
775 - account locked

525 - user not found - 
Returned when an invalid username is supplied.
80090308: LdapErr: DSID-0C09030B, comment: AcceptSecurityContext error, data 525, v893
HEX: 0x525 - user not found
DEC: 1317 - ERROR_NO_SUCH_USER (The specified account does not exist.)

52e - invalid credentials
Returned when a valid username is supplied but an invalid password/credential is supplied. If this error is received, 
it will prevent most other errors from being displayed
80090308: LdapErr: DSID-0C09030B, comment: AcceptSecurityContext error, data 52e, v893
HEX: 0x52e - invalid credentials
DEC: 1326 - ERROR_LOGON_FAILURE (Logon failure: unknown user name or bad password.)

530 - not permitted to logon at this time
Returned when a valid username and password/credential are supplied during times when login is restricted.
80090308: LdapErr: DSID-0C09030B, comment: AcceptSecurityContext error, data 530, v893
HEX: 0x530 - not permitted to logon at this time
DEC: 1328 - ERROR_INVALID_LOGON_HOURS (Logon failure: account logon time restriction violation.

531 - not permitted to logon from this workstation
Returned when a valid username and password/credential are supplied, but the user is restricted from using the workstation 
where the login was attempted.
80090308: LdapErr: DSID-0C09030B, comment: AcceptSecurityContext error, data 531, v893
HEX: 0x531 - not permitted to logon from this workstation
DEC: 1329 - ERROR_INVALID_WORKSTATION (Logon failure: user not allowed to log on to this computer.)
LDAP[userWorkstations: <multivalued list of workstation names>]
 
 
532 - password expired
Returned when a valid username is supplied, and the supplied password is valid but expired.
80090308: LdapErr: DSID-0C09030B, comment: AcceptSecurityContext error, data 532, v893
HEX: 0x532 - password expired
DEC: 1330 - ERROR_PASSWORD_EXPIRED (Logon failure: the specified account password has expired.)
LDAP[userAccountControl: <bitmask=0x00800000>] - PASSWORDEXPIRED

533 - account disabled
Returned when a valid username and password/credential are supplied but the account has been disabled.
80090308: LdapErr: DSID-0C09030B, comment: AcceptSecurityContext error, data 533, v893
HEX: 0x533 - account disabled
DEC: 1331 - ERROR_ACCOUNT_DISABLED (Logon failure: account currently disabled.)
LDAP[userAccountControl: <bitmask=0x00000002>] - ACCOUNTDISABLE

701 - account expired
Returned when a valid username and password/credential are supplied but the account has expired.
80090308: LdapErr: DSID-0C09030B, comment: AcceptSecurityContext error, data 701, v893
HEX: 0x701 - account expired
DEC: 1793 - ERROR_ACCOUNT_EXPIRED (The user's account has expired.)
LDAP[accountExpires: <value of -1, 0, or extemely large value indicates account will not expire>] - ACCOUNTEXPIRED

773 - user must reset password
Returned when a valid username and password/credential are supplied, but the user must change their password immediately
(before logging in for the first time, or after the password was reset by an administrator).
80090308: LdapErr: DSID-0C09030B, comment: AcceptSecurityContext error, data 773, v893
HEX: 0x773 - user must reset password
DEC: 1907 - ERROR_PASSWORD_MUST_CHANGE (The user's password must be changed before logging on the first time.)
LDAP[pwdLastSet: <value of 0 indicates admin-required password change>] - MUST_CHANGE_PASSWD

775 - account locked out
Returned when a valid username is supplied, but the account is locked out. Note that this error will be returned regardless 
of whether or not the password is invalid.
80090308: LdapErr: DSID-0C09030B, comment: AcceptSecurityContext error, data 775, v893
HEX: 0x775 - account locked out
DEC: 1909 - ERROR_ACCOUNT_LOCKED_OUT (The referenced account is currently locked out and may not be logged on to.)
LDAP[userAccountControl: <bitmask=0x00000010>] - LOCKOUT