Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: BSOD on seemingly random occasions: BAD_POOL_HEADER 0x00000019

22 Jul 2014   #1

Windows 7 Professional x64
BSOD on seemingly random occasions: BAD_POOL_HEADER 0x00000019

Up until tonight I've managed to crash out with the BAD_POOL_HEADER message fairly infrequently, it started happening a few weeks ago and at that point it was uncommon. Now it has happened twice in one night so far so I'm out looking for some assistance. The first instance tonight was while playing Minecraft, the second instance was in the middle of playing Battlefield 4.

This is my first time posting for help on these forums so if I need to include more information please let me know.

I've run the SF Diagnostic tool and attached the resulting .zip to this post.

My System SpecsSystem Spec
22 Jul 2014   #2

Microsoft Community Contributor Award Recipient

Windows 10 Home 64Bit

Welcome to the forum Aurion2112,

MalwareBytes seems to be causing the problem. Please uninstall it.
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *

Use !analyze -v to get detailed debugging information.

BugCheck 19, {20, fffffa8017b96100, fffffa8017b96120, 4020010}

*** WARNING: Unable to verify timestamp for mwac.sys
*** ERROR: Module load completed but symbols could not be loaded for mwac.sys
Probably caused by : fwpkclnt.sys ( fwpkclnt!FwpsConstructIpHeaderForTransportPacket0+20a )

Followup: MachineOwner

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

The pool is already corrupt at the time of the current request.
This may or may not be due to the caller.
The internal pool links must be walked to figure out a possible cause of
the problem, and then special pool applied to the suspect tags or the driver
verifier to a suspect driver.
Arg1: 0000000000000020, a pool block header size is corrupt.
Arg2: fffffa8017b96100, The pool entry we were looking for within the page.
Arg3: fffffa8017b96120, The next pool entry.
Arg4: 0000000004020010, (reserved)

Debugging Details:

BUGCHECK_STR:  0x19_20

POOL_ADDRESS: GetPointerFromAddress: unable to read from fffff80003709100
GetUlongFromAddress: unable to read from fffff800037091c0
 fffffa8017b96100 Nonpaged pool



PROCESS_NAME:  mbamservice.ex


LAST_CONTROL_TRANSFER:  from fffff80003604cae to fffff800034da1c0

fffff880`0e672258 fffff800`03604cae : 00000000`00000019 00000000`00000020 fffffa80`17b96100 fffffa80`17b96120 : nt!KeBugCheckEx
fffff880`0e672260 fffff880`01f290bd : 00000000`00000008 00000000`0000000c 00000000`676e7049 fffffa80`1826888c : nt!ExDeferredFreePool+0x12da
fffff880`0e672310 fffff880`01db904a : 00000000`00000000 fffff880`01db50c3 00000000`00000000 fffffa80`1bc1b430 : tcpip!IppInspectBuildHeaders+0x65d
fffff880`0e6725f0 fffff880`0b460109 : 00000000`00000000 00000000`00000014 00000000`00000000 fffffa80`1c5cab00 : fwpkclnt!FwpsConstructIpHeaderForTransportPacket0+0x20a
fffff880`0e672690 00000000`00000000 : 00000000`00000014 00000000`00000000 fffffa80`1c5cab00 fffffa80`1c5cab14 : mwac+0x6109


fffff880`01db904a 85c0            test    eax,eax


SYMBOL_NAME:  fwpkclnt!FwpsConstructIpHeaderForTransportPacket0+20a

FOLLOWUP_NAME:  MachineOwner

MODULE_NAME: fwpkclnt

IMAGE_NAME:  fwpkclnt.sys


FAILURE_BUCKET_ID:  X64_0x19_20_fwpkclnt!FwpsConstructIpHeaderForTransportPacket0+20a

BUCKET_ID:  X64_0x19_20_fwpkclnt!FwpsConstructIpHeaderForTransportPacket0+20a

Followup: MachineOwner
Use Revo Uninstaller to uninstall stubborn software. Opt for Advance Mode while uninstalling which allows you to remove leftover registry:-Perform a Clean boot:Reduce items at start-up. No software except anti-virus is required plus doing this improves the time for logging into windows:Run the System File Checker that scans the of all protected Windows 7 system files and replaces incorrect corrupted, changed/modified, or damaged versions with the correct versions if possible:
  • Click on the
  • Type CMD on Search
  • Left click and Run as Administrator
  • Type SFC /scannow
Full tutorial here:Post back results.
My System SpecsSystem Spec

 BSOD on seemingly random occasions: BAD_POOL_HEADER 0x00000019

Thread Tools

Similar help and support threads
Thread Forum
Random BSOD bad_pool_header 0x00000019 fspfltd2.sys
hi guys, i do have random freezes, the bluesreen occurs without any special reason. last one happened when i deleted some files, others shortly after boot, the system was installed from scratch like a week ago or so. any help woud be nice, thank you
BSOD Help and Support
System freezes, then restarts then blue screens. Performed operating re-installation already, but still does not work. Please advise. Thanks
BSOD Help and Support
Repeated BSOD- BAD_POOL_HEADER 0x00000019
Hello All, I am constantly receiving BAD_POOL_HEADER BSOD's over the last month. I haven't noticed the crash happening when doing anything specific-it's intermittent. I used to have F-Secure antivirus on this PC and thought maybe that was part of the problem as it was a newer install. I removed...
BSOD Help and Support
I've got a Asus G75V running windows 7 that's barely 3 months old but I've been plagued with BSODs since about week 3. About 12 so far. The first half dozen were solved when I changed my modem/router, but now there seems to be a new issue. I've had 5 error code 19's and the seem to be getting...
BSOD Help and Support
Random BSOD, Bad_Pool_header 0x00000019, System_Service_Exception 3b
Hello, I have come to the forum after trying to fix the problem myself. I re-installed Windows 7 about a month ago after increasingly common BSOD, thought it was my bad overclock on my custom PC. Just starting crashing again 2 days ago, went through a fresh install with all BIOS settings reset....
BSOD Help and Support

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 06:29.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App