diff --git a/reactos/dll/win32/samsrv/samrpc.c b/reactos/dll/win32/samsrv/samrpc.c
index 826bdc7f7f2..fc885fd02b1 100644
--- a/reactos/dll/win32/samsrv/samrpc.c
+++ b/reactos/dll/win32/samsrv/samrpc.c
@@ -7,18 +7,18 @@
  * PROGRAMMERS:     Eric Kohl
  */
 
-/* INCLUDES ****************************************************************/
+/* INCLUDES ******************************************************************/
 
 #include "samsrv.h"
 
 WINE_DEFAULT_DEBUG_CHANNEL(samsrv);
 
-/* GLOBALS ********************************************************************/
+/* GLOBALS *******************************************************************/
 
 static SID_IDENTIFIER_AUTHORITY NtSidAuthority = {SECURITY_NT_AUTHORITY};
 
 
-/* FUNCTIONS ***************************************************************/
+/* FUNCTIONS *****************************************************************/
 
 VOID
 SampStartRpcServer(VOID)
@@ -4187,10 +4187,126 @@ NTAPI
 SamrRemoveMemberFromAlias(IN SAMPR_HANDLE AliasHandle,
                           IN PRPC_SID MemberId)
 {
-    UNIMPLEMENTED;
-    return STATUS_NOT_IMPLEMENTED;
+    PSAM_DB_OBJECT AliasObject;
+    LPWSTR MemberIdString = NULL;
+    HANDLE MembersKeyHandle = NULL;
+    HANDLE MemberKeyHandle = NULL;
+    ULONG ulValueCount;
+    NTSTATUS Status;
+
+    TRACE("SamrRemoveMemberFromAlias(%p %p)\n",
+          AliasHandle, MemberId);
+
+    /* Validate the alias handle */
+    Status = SampValidateDbObject(AliasHandle,
+                                  SamDbAliasObject,
+                                  ALIAS_REMOVE_MEMBER,
+                                  &AliasObject);
+    if (!NT_SUCCESS(Status))
+    {
+        TRACE("failed with status 0x%08lx\n", Status);
+        return Status;
+    }
+
+    ConvertSidToStringSidW(MemberId, &MemberIdString);
+    TRACE("Member SID: %S\n", MemberIdString);
+
+    Status = SampRegOpenKey(AliasObject->MembersKeyHandle,
+                            MemberIdString,
+                            KEY_WRITE | KEY_QUERY_VALUE,
+                            &MemberKeyHandle);
+    if (!NT_SUCCESS(Status))
+    {
+        TRACE("SampRegOpenKey failed with status 0x%08lx\n", Status);
+        goto done;
+    }
+
+    Status = SampRegDeleteValue(MemberKeyHandle,
+                                AliasObject->Name);
+    if (!NT_SUCCESS(Status))
+    {
+        TRACE("SampRegDeleteValue failed with status 0x%08lx\n", Status);
+        goto done;
+    }
+
+    Status = SampRegQueryKeyInfo(MemberKeyHandle,
+                                 NULL,
+                                 &ulValueCount);
+    if (!NT_SUCCESS(Status))
+    {
+        TRACE("SampRegQueryKeyInfo failed with status 0x%08lx\n", Status);
+        goto done;
+    }
+
+    if (ulValueCount == 0)
+    {
+        SampRegCloseKey(MemberKeyHandle);
+        MemberKeyHandle = NULL;
+
+        Status = SampRegDeleteKey(AliasObject->MembersKeyHandle,
+                                  MemberIdString);
+        if (!NT_SUCCESS(Status))
+        {
+            TRACE("SampRegDeleteKey failed with status 0x%08lx\n", Status);
+            goto done;
+        }
+    }
+
+    Status = SampRegOpenKey(AliasObject->KeyHandle,
+                            L"Members",
+                            KEY_WRITE | KEY_QUERY_VALUE,
+                            &MembersKeyHandle);
+    if (!NT_SUCCESS(Status))
+    {
+        TRACE("SampRegOpenKey failed with status 0x%08lx\n", Status);
+        goto done;
+    }
+
+    Status = SampRegDeleteValue(MembersKeyHandle,
+                                MemberIdString);
+    if (!NT_SUCCESS(Status))
+    {
+        TRACE("SampRegDeleteValue failed with status 0x%08lx\n", Status);
+        goto done;
+    }
+
+    Status = SampRegQueryKeyInfo(MembersKeyHandle,
+                                 NULL,
+                                 &ulValueCount);
+    if (!NT_SUCCESS(Status))
+    {
+        TRACE("SampRegQueryKeyInfo failed with status 0x%08lx\n", Status);
+        goto done;
+    }
+
+    if (ulValueCount == 0)
+    {
+        SampRegCloseKey(MembersKeyHandle);
+        MembersKeyHandle = NULL;
+
+        Status = SampRegDeleteKey(AliasObject->KeyHandle,
+                                  L"Members");
+        if (!NT_SUCCESS(Status))
+        {
+            TRACE("SampRegDeleteKey failed with status 0x%08lx\n", Status);
+            goto done;
+        }
+    }
+
+done:
+    if (MemberKeyHandle != NULL)
+        SampRegCloseKey(MemberKeyHandle);
+
+    if (MembersKeyHandle != NULL)
+        SampRegCloseKey(MembersKeyHandle);
+
+    if (MemberIdString != NULL)
+        LocalFree(MemberIdString);
+
+    return Status;
 }
 
+
 /* Function 33 */
 NTSTATUS
 NTAPI
@@ -6338,10 +6454,28 @@ NTAPI
 SamrRemoveMultipleMembersFromAlias(IN SAMPR_HANDLE AliasHandle,
                                    IN PSAMPR_PSID_ARRAY MembersBuffer)
 {
-    UNIMPLEMENTED;
-    return STATUS_NOT_IMPLEMENTED;
+    ULONG i;
+    NTSTATUS Status = STATUS_SUCCESS;
+
+    TRACE("SamrRemoveMultipleMembersFromAlias(%p %p)\n",
+          AliasHandle, MembersBuffer);
+
+    for (i = 0; i < MembersBuffer->Count; i++)
+    {
+        Status = SamrRemoveMemberFromAlias(AliasHandle,
+                                           ((PSID *)MembersBuffer->Sids)[i]);
+
+        if (Status == STATUS_MEMBER_IN_ALIAS)
+            Status = STATUS_SUCCESS;
+
+        if (!NT_SUCCESS(Status))
+            break;
+    }
+
+    return Status;
 }
 
+
 /* Function 54 */
 NTSTATUS
 NTAPI