diff --git a/reactos/dll/win32/samsrv/samrpc.c b/reactos/dll/win32/samsrv/samrpc.c
index fd1d4f34684..f239a09411f 100644
--- a/reactos/dll/win32/samsrv/samrpc.c
+++ b/reactos/dll/win32/samsrv/samrpc.c
@@ -5410,7 +5410,14 @@ SampQueryUserLogon(PSAM_DB_OBJECT UserObject,
         goto done;
     }
 
-    /* FIXME: LogonHours */
+    /* Get the LogonHours attribute */
+    Status = SampGetLogonHoursAttrbute(UserObject,
+                                       &InfoBuffer->Logon.LogonHours);
+    if (!NT_SUCCESS(Status))
+    {
+        TRACE("Status 0x%08lx\n", Status);
+        goto done;
+    }
 
     *Buffer = InfoBuffer;
 
@@ -5570,7 +5577,14 @@ SampQueryUserAccount(PSAM_DB_OBJECT UserObject,
         goto done;
     }
 
-    /* FIXME: LogonHours */
+    /* Get the LogonHours attribute */
+    Status = SampGetLogonHoursAttrbute(UserObject,
+                                       &InfoBuffer->Account.LogonHours);
+    if (!NT_SUCCESS(Status))
+    {
+        TRACE("Status 0x%08lx\n", Status);
+        goto done;
+    }
 
     *Buffer = InfoBuffer;
 
@@ -5613,7 +5627,51 @@ done:
     return Status;
 }
 
-/* FIXME: SampQueryUserLogonHours */
+
+static
+NTSTATUS
+SampQueryUserLogonHours(PSAM_DB_OBJECT UserObject,
+                        PSAMPR_USER_INFO_BUFFER *Buffer)
+{
+    PSAMPR_USER_INFO_BUFFER InfoBuffer = NULL;
+    NTSTATUS Status;
+
+    TRACE("(%p %p)\n", UserObject, Buffer);
+
+    *Buffer = NULL;
+
+    InfoBuffer = midl_user_allocate(sizeof(SAMPR_USER_INFO_BUFFER));
+    if (InfoBuffer == NULL)
+    {
+        TRACE("Failed to allocate InfoBuffer!\n");
+        return STATUS_INSUFFICIENT_RESOURCES;
+    }
+
+    Status = SampGetLogonHoursAttrbute(UserObject,
+                                       &InfoBuffer->LogonHours.LogonHours);
+    if (!NT_SUCCESS(Status))
+    {
+        TRACE("SampGetLogonHoursAttrbute failed (Status 0x%08lx)\n", Status);
+        goto done;
+    }
+
+    *Buffer = InfoBuffer;
+
+done:
+    if (!NT_SUCCESS(Status))
+    {
+        if (InfoBuffer != NULL)
+        {
+            if (InfoBuffer->LogonHours.LogonHours.LogonHours != NULL)
+                midl_user_free(InfoBuffer->LogonHours.LogonHours.LogonHours);
+
+            midl_user_free(InfoBuffer);
+        }
+    }
+
+    return Status;
+}
+
 
 static
 NTSTATUS
@@ -6363,14 +6421,21 @@ SampQueryUserAll(PSAM_DB_OBJECT UserObject,
             goto done;
         }
 
+        /* Get the LogonHours attribute */
+        Status = SampGetLogonHoursAttrbute(UserObject,
+                                           &InfoBuffer->All.LogonHours);
+        if (!NT_SUCCESS(Status))
+        {
+            TRACE("Status 0x%08lx\n", Status);
+            goto done;
+        }
+
         InfoBuffer->All.LastLogon.LowPart = FixedData.LastLogon.LowPart;
         InfoBuffer->All.LastLogon.HighPart = FixedData.LastLogon.HighPart;
 
         InfoBuffer->All.LastLogoff.LowPart = FixedData.LastLogoff.LowPart;
         InfoBuffer->All.LastLogoff.HighPart = FixedData.LastLogoff.HighPart;
 
-// USER_ALL_LOGONHOURS
-
         InfoBuffer->All.BadPasswordCount = FixedData.BadPasswordCount;
 
         InfoBuffer->All.LogonCount = FixedData.LogonCount;
@@ -6385,7 +6450,8 @@ SampQueryUserAll(PSAM_DB_OBJECT UserObject,
         InfoBuffer->All.PasswordMustChange.LowPart = PasswordMustChange.LowPart;
         InfoBuffer->All.PasswordMustChange.HighPart = PasswordMustChange.HighPart;
 
-        InfoBuffer->All. WhichFields |= /* USER_ALL_READ_LOGON_MASK; */
+        InfoBuffer->All. WhichFields |= USER_ALL_READ_LOGON_MASK;
+/*
             USER_ALL_HOMEDIRECTORY |
             USER_ALL_HOMEDIRECTORYDRIVE |
             USER_ALL_SCRIPTPATH |
@@ -6393,11 +6459,12 @@ SampQueryUserAll(PSAM_DB_OBJECT UserObject,
             USER_ALL_WORKSTATIONS |
             USER_ALL_LASTLOGON |
             USER_ALL_LASTLOGOFF |
-//            USER_ALL_LOGONHOURS |
+            USER_ALL_LOGONHOURS |
             USER_ALL_BADPASSWORDCOUNT |
             USER_ALL_LOGONCOUNT;
             USER_ALL_PASSWORDCANCHANGE |
             USER_ALL_PASSWORDMUSTCHANGE;
+*/
     }
 
     if (UserObject->Access & USER_READ_ACCOUNT)
@@ -6575,10 +6642,10 @@ SamrQueryInformationUser(IN SAMPR_HANDLE UserHandle,
                                         Buffer);
             break;
 
-//        case UserLogonHoursInformation:
-//            Status = SampQueryUserLogonHours(UserObject,
-//                                             Buffer);
-//            break;
+        case UserLogonHoursInformation:
+            Status = SampQueryUserLogonHours(UserObject,
+                                             Buffer);
+            break;
 
         case UserAccountInformation:
             Status = SampQueryUserAccount(UserObject,
diff --git a/reactos/dll/win32/samsrv/samsrv.h b/reactos/dll/win32/samsrv/samsrv.h
index 672211b68b4..3c72e692825 100644
--- a/reactos/dll/win32/samsrv/samsrv.h
+++ b/reactos/dll/win32/samsrv/samsrv.h
@@ -326,4 +326,8 @@ SampSetUserPassword(IN PSAM_DB_OBJECT UserObject,
                     IN PENCRYPTED_LM_OWF_PASSWORD LmPassword,
                     IN BOOLEAN LmPasswordPresent);
 
+NTSTATUS
+SampGetLogonHoursAttrbute(IN PSAM_DB_OBJECT UserObject,
+                          IN PSAMPR_LOGON_HOURS LogonHours);
+
 /* EOF */
diff --git a/reactos/dll/win32/samsrv/user.c b/reactos/dll/win32/samsrv/user.c
index a80402bd4ab..eeb2cf30720 100644
--- a/reactos/dll/win32/samsrv/user.c
+++ b/reactos/dll/win32/samsrv/user.c
@@ -581,4 +581,74 @@ done:
     return Status;
 }
 
+
+NTSTATUS
+SampGetLogonHoursAttrbute(IN PSAM_DB_OBJECT UserObject,
+                          IN PSAMPR_LOGON_HOURS LogonHours)
+{
+    PUCHAR RawBuffer = NULL;
+    ULONG Length = 0;
+    ULONG BufferLength = 0;
+    NTSTATUS Status;
+
+    Status = SampGetObjectAttribute(UserObject,
+                                    L"LogonHours",
+                                    NULL,
+                                    NULL,
+                                    &Length);
+    if (Status != STATUS_BUFFER_OVERFLOW)
+    {
+        TRACE("SampGetObjectAttribute failed (Status 0x%08lx)\n", Status);
+        return Status;
+    }
+
+    Status = STATUS_SUCCESS;
+
+    if (Length == 0)
+    {
+        LogonHours->UnitsPerWeek = 0;
+        LogonHours->LogonHours = NULL;
+    }
+    else
+    {
+        RawBuffer = midl_user_allocate(Length);
+        if (RawBuffer == NULL)
+        {
+            Status = STATUS_INSUFFICIENT_RESOURCES;
+            goto done;
+        }
+
+        Status = SampGetObjectAttribute(UserObject,
+                                        L"LogonHours",
+                                        NULL,
+                                        (PVOID)RawBuffer,
+                                        &Length);
+        if (!NT_SUCCESS(Status))
+            goto done;
+
+        LogonHours->UnitsPerWeek = *((PUSHORT)RawBuffer);
+
+        BufferLength = (((ULONG)LogonHours->UnitsPerWeek) + 7) / 8;
+
+        LogonHours->LogonHours = midl_user_allocate(BufferLength);
+        if (LogonHours->LogonHours == NULL)
+        {
+            TRACE("Failed to allocate LogonHours buffer!\n");
+            Status = STATUS_INSUFFICIENT_RESOURCES;
+            goto done;
+        }
+
+        memcpy(LogonHours->LogonHours,
+               &(RawBuffer[2]),
+               BufferLength);
+    }
+
+done:
+
+    if (RawBuffer != NULL)
+        midl_user_free(RawBuffer);
+
+    return Status;
+}
+
 /* EOF */
diff --git a/reactos/include/reactos/idl/sam.idl b/reactos/include/reactos/idl/sam.idl
index f4ae902a13f..82c00e11514 100644
--- a/reactos/include/reactos/idl/sam.idl
+++ b/reactos/include/reactos/idl/sam.idl
@@ -469,8 +469,7 @@ cpp_quote("#endif")
 typedef struct _SAMPR_LOGON_HOURS
 {
     unsigned short UnitsPerWeek;
-//    [size_is(1260), length_is((UnitsPerWeek + 7) / 8)] unsigned char *LogonHours; // FIXME
-    [size_is(1260)] unsigned char *LogonHours;
+    [size_is(1260), length_is((UnitsPerWeek + 7) / 8)] unsigned char *LogonHours; // FIXME
 } SAMPR_LOGON_HOURS, *PSAMPR_LOGON_HOURS;
 
 typedef struct _SAMPR_USER_ALL_INFORMATION