I am trying to upload video files onto my Synology DiskStation using my Samsung laptop.  If the file size is bigger than 1GB, my laptop gives me 'DPC_WATCHDOG_VIOLATION' error message and shuts down and restarts in a few minutes.  This has been happening all the time,  I am quite fed up.  Can someone advise me of a solution to my problem.

I have uploaded the minidump files at the following address:


Many thanks,



Question Info

Last updated August 4, 2018 Views 2,205 Applies to:

Hi Surendra,

Both of the attached DMP files are of the DPC_WATCHDOG_VIOLATION (133) bug check.

This bug check indicates that the DPC watchdog executed, either because it detected a single long-running deferred procedure call (DPC), or because the system spent a prolonged time at an interrupt request level (IRQL) of DISPATCH_LEVEL or above.

3: kd> k
Child-SP          RetAddr           Call Site
fffff880`02e9d738 fffff803`a4e54f4b nt!KeBugCheckEx
fffff880`02e9d740 fffff803`a4d1a1e1 nt! ?? ::FNODOBFM::`string'+0x145a4
fffff880`02e9d7c0 fffff803`a4c31e94 nt!KeUpdateRunTime+0x51
fffff880`02e9d7f0 fffff803`a4cce01e hal!HalpTimerClockInterrupt+0x50
fffff880`02e9d820 fffff880`01a45de4 nt!KiInterruptDispatchLBControl+0x1ce
fffff880`02e9d9b8 fffff880`01a41561 ndis!memcpy+0x24
fffff880`02e9d9c0 fffff880`04521477 ndis!NdisGetDataBuffer+0xe1
fffff880`02e9da10 00000000`00000001 avgfwd6a+0x3477
fffff880`02e9da18 00000000`0000005e 0x1
fffff880`02e9da20 fffffa80`e6029280 0x5e
fffff880`02e9da28 fffff880`0451fc01 0xfffffa80`e6029280
fffff880`02e9da30 fffff880`00000000 avgfwd6a+0x1c01
fffff880`02e9da38 fffff880`02e9db08 0xfffff880`00000000
fffff880`02e9da40 fffff880`02e9db42 0xfffff880`02e9db08
fffff880`02e9da48 00000000`00000001 0xfffff880`02e9db42
fffff880`02e9da50 b7509dbb`2a321100 0x1
fffff880`02e9da58 00450008`fc7747c3 0xb7509dbb`2a321100
fffff880`02e9da60 06800040`7143dc05 0x00450008`fc7747c3
fffff880`02e9da68 a8c04f01`a8c0c92d 0x06800040`7143dc05
fffff880`02e9da70 fffffa80`e6029590 0xa8c04f01`a8c0c92d
fffff880`02e9da78 00000000`00000001 0xfffffa80`e6029590
fffff880`02e9da80 00000000`00000001 0x1
fffff880`02e9da88 fffff880`044ed3d8 0x1
fffff880`02e9da90 fffff880`02e9dc80 avgwfpa+0xf3d8
fffff880`02e9da98 fffffa80`1fc9e030 0xfffff880`02e9dc80
fffff880`02e9daa0 fffffa80`09429001 0xfffffa80`1fc9e030
fffff880`02e9daa8 00000000`00000008 0xfffffa80`09429001
fffff880`02e9dab0 fffffa80`1fc9e030 0x8
fffff880`02e9dab8 fffff880`04520f73 0xfffffa80`1fc9e030
fffff880`02e9dac0 fffff880`02e9dc80 avgfwd6a+0x2f73
fffff880`02e9dac8 00000000`00000001 0xfffff880`02e9dc80
fffff880`02e9dad0 fffffa80`0a9d8d01 0x1
fffff880`02e9dad8 00000000`00000000 0xfffffa80`0a9d8d01

avgfwd6a.sys and avgwfpa.sys is the AVG Firewall driver.

Remove and replace AVG with Windows 8's built-in Windows Defender for temporary troubleshooting purposes as it's causing NETBIOS conflicts:

AVG removal - http://www.avg.com/us-en/utilities

Windows Defender (how to turn on after removal) - http://www.eightforums.com/tutorials/21962-windows-defender-turn-off-windows-8-a.html



Debugger/Reverse Engineer.

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This was Related to avgwfpa.sys AVG Firewall driver from AVG Technologies CZ, s.r.o.  I would remove it and use the built in defender.

Microsoft (R) Windows Debugger Version 6.3.9600.17029 AMD64
Copyright (c) Microsoft Corporation. All rights reserved.

Loading Dump File [C:\Users\Ken\Desktop\050214-37140-01.dmp]
Mini Kernel Dump File: Only registers and stack trace are available

************* Symbol Path validation summary **************
Response                         Time (ms)     Location
Deferred                                       SRV*H:\symbols*http://msdl.microsoft.com/download/symbols
Symbol search path is: SRV*H:\symbols*http://msdl.microsoft.com/download/symbols
Executable search path is:
Windows 8 Kernel Version 9200 MP (4 procs) Free x64
Product: WinNt, suite: TerminalServer SingleUserTS Personal
Built by: 9200.16628.amd64fre.win8_gdr.130531-1504
Machine Name:
Kernel base = 0xfffff801`8bc12000 PsLoadedModuleList = 0xfffff801`8bedea20
Debug session time: Fri May  2 17:16:57.724 2014 (UTC - 4:00)
System Uptime: 1 days 0:10:54.068
Loading Kernel Symbols
Loading User Symbols
Loading unloaded module list
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *

Use !analyze -v to get detailed debugging information.

BugCheck 133, {0, 501, 500, 0}

*** WARNING: Unable to verify timestamp for avgwfpa.sys
*** ERROR: Module load completed but symbols could not be loaded for avgwfpa.sys
Probably caused by : avgwfpa.sys ( avgwfpa+1b3a0 )

Followup: MachineOwner

2: kd> !analyze -v
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *

The DPC watchdog detected a prolonged run time at an IRQL of DISPATCH_LEVEL
or above.
Arg1: 0000000000000000, A single DPC or ISR exceeded its time allotment. The offending
    component can usually be identified with a stack trace.
Arg2: 0000000000000501, The DPC time count (in ticks).
Arg3: 0000000000000500, The DPC time allotment (in ticks).
Arg4: 0000000000000000

Debugging Details:







ANALYSIS_VERSION: 6.3.9600.17029 (debuggers(dbg).140219-1702) amd64fre


LAST_CONTROL_TRANSFER:  from fffff8018bdebf4b to fffff8018bc6c440

fffff880`02e2a458 fffff801`8bdebf4b : 00000000`00000133 00000000`00000000 00000000`00000501 00000000`00000500 : nt!KeBugCheckEx
fffff880`02e2a460 fffff801`8bcb11e1 : ffffffff`ffd0d9a0 fffff880`02e02180 fffff880`02e2a5c0 fffff780`00000320 : nt! ?? ::FNODOBFM::`string'+0x145a4
fffff880`02e2a4e0 fffff801`8c380e94 : ffffffff`ffd0d9a0 fffffa80`05600202 fffffa80`05600210 fffff801`8bcaede9 : nt!KeUpdateRunTime+0x51
fffff880`02e2a510 fffff801`8bc6501e : 00000000`00000002 fffffa80`0a102850 fffffa80`05600210 00000000`f0000001 : hal!HalpTimerClockInterrupt+0x50
fffff880`02e2a540 fffff880`046e63a0 : fffffa80`0a102850 fffff880`02e2ab48 fffff880`02e2a769 fffffa80`05600202 : nt!KiInterruptDispatchLBControl+0x1ce
fffff880`02e2a6d0 fffffa80`0a102850 : fffff880`02e2ab48 fffff880`02e2a769 fffffa80`05600202 fffff880`02e2aac0 : avgwfpa+0x1b3a0
fffff880`02e2a6d8 fffff880`02e2ab48 : fffff880`02e2a769 fffffa80`05600202 fffff880`02e2aac0 fffffa80`0a102850 : 0xfffffa80`0a102850
fffff880`02e2a6e0 fffff880`02e2a769 : fffffa80`05600202 fffff880`02e2aac0 fffffa80`0a102850 fffff880`02e2ab48 : 0xfffff880`02e2ab48
fffff880`02e2a6e8 fffffa80`05600202 : fffff880`02e2aac0 fffffa80`0a102850 fffff880`02e2ab48 fffff801`8bc65028 : 0xfffff880`02e2a769
fffff880`02e2a6f0 fffff880`02e2aac0 : fffffa80`0a102850 fffff880`02e2ab48 fffff801`8bc65028 fffff880`02e2aa30 : 0xfffffa80`05600202
fffff880`02e2a6f8 fffffa80`0a102850 : fffff880`02e2ab48 fffff801`8bc65028 fffff880`02e2aa30 00000000`00000002 : 0xfffff880`02e2aac0
fffff880`02e2a700 fffff880`02e2ab48 : fffff801`8bc65028 fffff880`02e2aa30 00000000`00000002 fffffa80`05600210 : 0xfffffa80`0a102850
fffff880`02e2a708 fffff801`8bc65028 : fffff880`02e2aa30 00000000`00000002 fffffa80`05600210 00000000`00000000 : 0xfffff880`02e2ab48
fffff880`02e2a710 50b7509d`bb2a3211 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiInterruptDispatchLBControl+0x1d8
06000000`00000000 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : 0x50b7509d`bb2a3211


fffff880`046e63a0 ??              ???


SYMBOL_NAME:  avgwfpa+1b3a0

FOLLOWUP_NAME:  MachineOwner

MODULE_NAME: avgwfpa

IMAGE_NAME:  avgwfpa.sys


FAILURE_BUCKET_ID:  0x133_DPC_avgwfpa+1b3a0

BUCKET_ID:  0x133_DPC_avgwfpa+1b3a0


FAILURE_ID_HASH_STRING:  km:0x133_dpc_avgwfpa+1b3a0

FAILURE_ID_HASH:  {c20841f8-7df5-d567-beb2-5dd1de70303a}

Followup: MachineOwner

Cat herder
Windows Insider MVP
MVP-Windows and Devices for IT

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