diff --git a/impacket/dcerpc/v5/drsuapi.py b/impacket/dcerpc/v5/drsuapi.py
index 70b0ba166..2c799971e 100644
--- a/impacket/dcerpc/v5/drsuapi.py
+++ b/impacket/dcerpc/v5/drsuapi.py
@@ -33,7 +33,7 @@
 from impacket import LOG
 from impacket.dcerpc.v5.ndr import NDRCALL, NDRSTRUCT, NDRPOINTER, NDRUniConformantArray, NDRUNION, NDR, NDRENUM, NDRUniFixedArray
 from impacket.dcerpc.v5.dtypes import PUUID, DWORD, NULL, GUID, LPWSTR, BOOL, ULONG, UUID, LONGLONG, ULARGE_INTEGER, \
-    LARGE_INTEGER, ULONGLONG, LPCSTR, LPDWORD, SID, USHORT, ULONG_ARRAY
+    LARGE_INTEGER, ULONGLONG, LPCSTR, LPDWORD, SID, USHORT, ULONG_ARRAY, UCHAR, PRPC_UNICODE_STRING
 from impacket import hresult_errors, system_errors
 from impacket.structure import Structure
 from impacket.uuid import uuidtup_to_bin, string_to_bin
@@ -1491,19 +1491,153 @@ class DRS_MSG_REPADD(NDRUNION):
     }
 
 
+# 4.1.1.1.13 INTFORMPROB_DRS_WIRE_V1
+class INTFORMPROB_DRS_WIRE_V1(NDRSTRUCT):
+    structure = (
+        ('dsid', DWORD),
+        ('extendedErr', DWORD),
+        ('extendedData', DWORD),
+        ('problem', USHORT),
+        ('type', ATTRTYP),
+        ('valReturned', BOOL),
+        ('Val', ATTRVAL),
+    )
+
+# 4.1.1.1.12 PROBLEMLIST_DRS_WIRE_V1
+class PROBLEMLIST_DRS_WIRE_V1(NDRSTRUCT):
+    structure = (
+        ('pNextProblem', NDRPOINTER),
+        ('intprob', INTFORMPROB_DRS_WIRE_V1),
+    )
+
+    def fromString(self, data, soFar=0):
+        # Here we're changing the struct so we can represent a linked list with NDR
+        self.fields['pNextProblem'] = PROBLEMLIST_DRS_WIRE_V1(isNDR64=self._isNDR64)
+        retVal = NDRSTRUCT.fromString(self, data, soFar)
+        return retVal
+
+# 4.1.1.1.11 ATRERR_DRS_WIRE_V1
+class ATRERR_DRS_WIRE_V1(NDRSTRUCT):
+    structure = (
+        ('pObject', PDSNAME),
+        ('count', ULONG),
+        ('FirstProblem', PROBLEMLIST_DRS_WIRE_V1),
+    )
+
+# 4.1.1.1.14 NAMERR_DRS_WIRE_V1
+class NAMERR_DRS_WIRE_V1(NDRSTRUCT):
+    structure = (
+        ('dsid', DWORD),
+        ('extendedErr', DWORD),
+        ('extendedData', DWORD),
+        ('problem', USHORT),
+        ('pMatched', PDSNAME),
+    )
+
+
+# 4.1.1.1.16 NAMERESOP_DRS_WIRE_V1
+class NAMERESOP_DRS_WIRE_V1(NDRSTRUCT):
+    structure = (
+        ('nameRes', UCHAR),
+        ('unusedPad', UCHAR),
+        ('nextRDN', USHORT),
+    )
+
+
+# 4.1.1.1.17 DSA_ADDRESS_LIST_DRS_WIRE_V1
+class DSA_ADDRESS_LIST_DRS_WIRE_V1(NDRSTRUCT):
+    structure = (
+        ('pNextAddress', NDRPOINTER),
+        ('pAddress', PRPC_UNICODE_STRING),
+    )
+
+    def fromString(self, data, soFar=0):
+        # Here we're changing the struct so we can represent a linked list with NDR
+        self.fields['pNextAddress'] = DSA_ADDRESS_LIST_DRS_WIRE_V1(isNDR64=self._isNDR64)
+        retVal = NDRSTRUCT.fromString(self, data, soFar)
+        return retVal
+
+class PDSA_ADDRESS_LIST_DRS_WIRE_V1(NDRPOINTER):
+    referent = (
+        ('Data', DSA_ADDRESS_LIST_DRS_WIRE_V1),
+    )
+
+
+# 4.1.1.1.18 CONTREF_DRS_WIRE_V1
+class CONTREF_DRS_WIRE_V1(NDRSTRUCT):
+    structure = (
+        ('pTarget', PDSNAME),
+        ('OpState', NAMERESOP_DRS_WIRE_V1),
+        ('aliasRDN', USHORT),
+        ('RDNsInternal', USHORT),
+        ('refType', USHORT),
+        ('count', USHORT),
+        ('pDAL', PDSA_ADDRESS_LIST_DRS_WIRE_V1),
+        ('pNextContRef', NDRPOINTER),
+        ('bNewChoice', BOOL),
+        ('choice', UCHAR),
+    )
+
+    def fromString(self, data, soFar=0):
+        # Here we're changing the struct so we can represent a linked list with NDR
+        self.fields['pNextContRef'] = CONTREF_DRS_WIRE_V1(isNDR64=self._isNDR64)
+        retVal = NDRSTRUCT.fromString(self, data, soFar)
+        return retVal
+
+
+# 4.1.1.1.15 REFERR_DRS_WIRE_V1
+class REFERR_DRS_WIRE_V1(NDRSTRUCT):
+    structure = (
+        ('dsid', DWORD),
+        ('extendedErr', DWORD),
+        ('extendedData', DWORD),
+        ('Refer', CONTREF_DRS_WIRE_V1),
+    )
+
+
+# this "metaclass" is shared by a few DRS error structures
+class _ERR_DRS_WIRE_V1(NDRSTRUCT):
+    structure = (
+        ('dsid', DWORD),
+        ('extendedErr', DWORD),
+        ('extendedData', DWORD),
+        ('problem', USHORT),
+    )
+
+
+# 4.1.1.1.19 SECERR_DRS_WIRE_V1
+class SECERR_DRS_WIRE_V1(_ERR_DRS_WIRE_V1):
+    pass
+
+
+# 4.1.1.1.20 SVCERR_DRS_WIRE_V1
+class SVCERR_DRS_WIRE_V1(_ERR_DRS_WIRE_V1):
+    pass
+
+
+# 4.1.1.1.21 UPDERR_DRS_WIRE_V1
+class UPDERR_DRS_WIRE_V1(_ERR_DRS_WIRE_V1):
+    pass
+
+
+# 4.1.1.1.22 SYSERR_DRS_WIRE_V1
+class SYSERR_DRS_WIRE_V1(_ERR_DRS_WIRE_V1):
+    pass
+
+
 # 4.1.1.1.10 DIRERR_DRS_WIRE_V1
 class DIRERR_DRS_WIRE_V1(NDRUNION):
     commonHdr = (
         ('tag', DWORD),
     )
     union = {
-        # 1: ('AtrErr', ATRERR_DRS_WIRE_V1),
-        # 2: ('NamErr', NAMERR_DRS_WIRE_V1),
-        # 3: ('RefErr', REFERR_DRS_WIRE_V1),
-        # 4: ('SecErr', SECERR_DRS_WIRE_V1),
-        # 5: ('SvcErr', SVCERR_DRS_WIRE_V1),
-        # 6: ('UpdErr', UPDERR_DRS_WIRE_V1),
-        # 7: ('SysErr', SYSERR_DRS_WIRE_V1),
+        1: ('AtrErr', ATRERR_DRS_WIRE_V1),
+        2: ('NamErr', NAMERR_DRS_WIRE_V1),
+        3: ('RefErr', REFERR_DRS_WIRE_V1),
+        4: ('SecErr', SECERR_DRS_WIRE_V1),
+        5: ('SvcErr', SVCERR_DRS_WIRE_V1),
+        6: ('UpdErr', UPDERR_DRS_WIRE_V1),
+        7: ('SysErr', SYSERR_DRS_WIRE_V1),
     }