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  1. My computer sometimes totally crashes. Not even a blue screen, I get a no screen: the screen is black, the power is off. The last 3 times this happened were on 2021-03-20, 2021-07-02, and 2021-07-03. I have configured my computer to try to generate a memory dump (C:\Windows\MEMORY.DMP) file so that maybe the problem can be traced down. Unfortunately, that memory dump file is not always created, nor do I really know how to do Windows debugging. So, I am posting this thread seeking insight from anyone who is a Windows expert. Below are highlights from using windbg to analyse the MEMORY.DMP file from the last (2021-07-03) crash: KERNEL_SECURITY_CHECK_FAILURE (139) A kernel component has corrupted a critical data structure. The corruption could potentially allow a malicious user to gain control of this machine. ... BUGCHECK_CODE: 139 ... BLACKBOXWINLOGON: 1 PROCESS_NAME: System ERROR_CODE: (NTSTATUS) 0xc0000409 - The system detected an overrun of a stack-based buffer in this application. This overrun could potentially allow a malicious user to gain control of this application. EXCEPTION_CODE_STR: c0000409 EXCEPTION_PARAMETER1: 000000000000001d EXCEPTION_STR: 0xc0000409 ... SYMBOL_NAME: nt!KiFastFailDispatch+d0 MODULE_NAME: nt IMAGE_NAME: ntkrnlmp.exe STACK_COMMAND: .thread ; .cxr ; kb BUCKET_ID_FUNC_OFFSET: d0 FAILURE_BUCKET_ID: 0x139_1d_INVALID_BALANCED_TREE_nt!KiFastFailDispatch Attached as a text file is the full windbg result of analysing that MEMORY.DMP file. The results above are exactly what I also saw on 2021-03-20, while the 2021-07-02 crash failed to produce a MEMORY.DMP file. Does anyone have an insight into what is going on here? I note this previous post which reported a KERNEL_SECURITY_CHECK_FAILURE, however, its details seem to be different than mine. That previous did have an intriguing reply by Porthos who suggested that other security software can interfere with MBAM. He gave a link which specifically mentions several VPNs. I use Torguard VPN's Windows client, which is not mentioned. So, does anyone see any indication in the windbg result that MBAM and Torguard may be conflicting? I will not hesitate to turn off MBAM's Web Protection if if is problematic. I have had a couple of other strange MBAM issues recently (link1, link2), and in the second one Porthos and I had some discussion about MBAM, Torguard, OpenVPN, and Wireguard. 2021-07-03_windbg_analysis.txt
  2. Hey folks, I ran a scan yesterday as my computer was acting a little strange - fans on full speed and CPU usage spiking, slow load times for basic applications, disconnecting from wifi, etc. Before the scan was complete I got a BSOD and had to manually restart. Ran a scan in safe mode with Windows Defender and got nothing back. Rebooted and things seemed to be working normal so I initiated another scan with MB Premium and the scan went very slow(over four hours) then identified a threat that I selected to quarantine. During the subsequent restart the computer froze without powering down. After about 30 minutes I pressed the reset button. When it rebooted I had the report with the threat identified but when I go to remove the malicious file it says i am unable to remove it and shows in the report as ignored. I dug through the forums and downloaded the AdwCleaner tool, ran that and it detects nothing. Attached are the reports, please let me know if there's anything else I can provide to help. Thanks! AdwCleaner[S00].txt removalfailed.txt
  3. Today my PC crashed with stop code REGISTRY_FILTER_DRIVER_EXCEPTION and farflt.sys was mentioned. Using MB Trial version 4.1.0. Windows 10 64bit with latest updates. I can send more logs if needed. FRST.txt Addition.txt mb-check-results.zip
  4. Hi all, would seriously appreciate some help with this! Recently after rebooting my pc, it says that my pc/device needs to be repaired because a critical system driver is missing or contains errors. \windows.old\WINDOWS/system32\DRIVERS\MbamElam.sys I have tried disabling the Elam thing from startup (f8), it gets on windows, but mbam can't start the service, trying it manually from services.msc says (from memory) error 507, something about being unable to validate it. Avast free's UI also doesn't load, but apparently the shields are on. Win Def is on, I remember putting periodic scanning scanning on but not the AV. What could be the problem? When I load windows, it gives me an option for either win 10 or win 10 pro, "pro" is the old version, the one that can't boot, never noticed this before, I can get to login with win 10 normal but haven't tried logging in, idk of this is relevant. I also looked in the driver folder and MbamElam.sys is there, why isn't it starting up? Disabling Elam from startup probably has something to do with the AV/mbam being disabled, but it's the only way I can access win 10 pro. I can get into bootmode. Recently I have installed a win areo application, a new screensaver, and some skins for classic start menu, as well as a new update. Restore might work here, although even though system protection is on I can't find a backup, although I think there was a one from the 18th with startup repair... Any help?
  5. I am on the latest version 4.1.2.73 1.0.1003. It just randomly crashes sometimes giving IRQL not less or equal. It happened a while back and I ran the Malwarebytes Support Tool and that worked for a while but it has started happening again. Here's the .dmp and malwarebytes check results. mb-check-results.zip 080820-44953-01.dmp 081120-50781-01.dmp
  6. happened yesterday and today, searched around and found out that malwarebytes is causing it.. I turned off real time web protection because an admin suggested it to another user and it worked for them. Please fix this / help me
  7. Hello, I have been using Malwarebytes for a long time now and also adwcleaner here and there but recently within the last 2 weeks i have been given BSOD crashes via farflt.sys which is a registered ransom ware system file for malwarebytes, Now i would like to know if Malwarebytes will continue to work if i delete this file and stay deleted not replicate itself upon reboot of the software/update as being a savvy user i dont have a need for the ransom ware protection anyway, but i dont want to have to go elsewhere for my malware protection as i much prefer to keep what im used to. Thanks Martyn
  8. I can confirm it was causing havoc on my server that runs Plex
  9. Just as an FYI... I also use Plex and uTorrent, and have also been experiencing multiple BSOD in the last few days. I had assumed it was caused by the most recent uTorrent release, but I just caught the latest screen before it restarted, and it stated mwac.sys as being what had 'failed'.
  10. Hi So I have both Kaspersky and Malwarebytes and today kaspersky asked me to restart to complete an update. So I did and when it finished restarting it gave me an error saying my PC needs to be repaired and that the operating system couldn’t be loaded because a critical system mdriver is missin or contains errors. The file in question was Windows\system32\DRIVERS\MbamElam.sys and the error code was 0xc000007b. I don’t know what to do please help I have a lot of important info on this computer and I can’t go out to repair it because of the whole pandemic 😭😭😭
  11. Hi, I have been getting memory related BSOD at early morning around 6am - 8am. The diagnostic files are attached below. The windows 10 (x64) installed came with the laptop when I purchased it.· Age of system : 4-5 years· Age of OS installation - No i didn't I just do system restore from time to time· CPU : Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz, 2808 Mhz, 4 Core(s), 8 Logical Processor(s)· Video Card : NVIDIA GeForce GTX 1060 · Laptop model : Acer Predator Helios 300 G3-572 * The laptop is undervolted to -110.4 mV SysnativeFileCollectionApp.zip
  12. Hello. I had a Windows update on FRI 1-10-2020. Over this weekend my server rebooted after BSOD. Over 12 times since Fri. BSOD points to MWAC.SYS. IRQL not less or equal. Windows cumulative update windows server 2019 (1809) x64 based -- (KB4530715) We Shut off service to keep business running for the day will try reinstall malwarebytes tonight. I have extracted the dump file text and memory dump text. From what i gather windows and malwarebytes are fighting for file control due to file protection, and system protection. I have not been able to test but an uninstall and reinstall maybe the fix. Basically resetting permissions after Windows does what ever it thinks it needed to do. Dumpfile text .txt MemoryDMP.txt
  13. I was working on my PC and suddenly I got the "Blue Screen of Death" on mwac.sys and I lost all my work for the last 2 hours! :( I am a Malwarebytes Premium user. After looking it up the file online, I saw that it is part of Malwarebytes I have Malwarebytes Premium Ver 4.0.4
  14. Ran Farbar64 and mb-check logs are attached. no minidump or *.dmp in c:\windows mb-check-results.zip FRST.txt Addition.txt
  15. Hello, During this month I've been experiencing multiple BSODs due to what I'm assuming mwac.sys. I've attached the required Sysnative file and included my computer details below. · OS - Windows 7 · x64 ? · What was original installed OS on system? · OEM version · 2014 · Installation Date: 4/2/2014 · CPU: Intel Core i5 4670K @ 3.40GHz · Video Card: 2047MB NVIDIA GeForce GTX 760 (MSI) · MotherBoard - MSI Z87-G55 (MS-7821) · Power Supply - In Win 650 W 80+ Bronze Certified ATX Power Supply · Desktop Please let me know if additional information is needed. Thanks - Anders SysnativeFileCollectionApp AC2020.zip
  16. Twice now in the last week, my system has crashed for no apparent reason giving me the BSOD. In one case, I was typing an email. The other case occurred while the computer was idle. I have Windows 10 Pro and am using the latest paid version of Malwarebytes - Premium 3.4.4. Windows gave me the following message: "Stop code: SYSTEM SCAN AT RAISED IRQL CAUGHT IMPROPER DRIVER UPLOAD. What failed: mwac.sys". As far as I can tell, everything is up to date. If you require additional information, please let me know. Thanks.
  17. If you need anymore information please tell me.
  18. Hello everyone, I am new here. I am using a HP pavilion DM4, with windows 7 home premium, and about 20 days ago (7/8/2019, I got a black screen with a cursor only after logging into my Admin Account, even on safemode. the day before this issue occurred (7/7/2019), I had turned off my AVG, while trying to run a malwarebytes scan, to do so, I changed its (AVGs) permissions to EVERYONE and I also set the AVG off, and restarted my computer, Lo and Behold, I couldn't get back on my ADMIN main user!, I am currently writing this on the same laptop, but on the account of a secondary user. I can only open a few Antivirus programs such as malwarebytes and AVG, however I cannot run Roguekiller or MSERT as they freeze. Ive done many test and NONE concluded malware, except a Malware bytes Anti Rootkit scan which detected 4 trojan files located in C:$\recyclebin (system recycle bin?). I've since removed them and I am currently attempting all my options. The crazy thing is, I actually fixed the problem, via system restore, and all was good! however I became stupid in thinking and decided to RE-RESTORE the system, because I was upset that my google chrome had updated!!!, and thus the problem had returned, and the old restore points have vanished since!. I would really love some help because I am sure something has taken over the admin privileges of the system, and is running SVCHOST.EXE and CONSENT.EXE upon start. Ive studied the strings and the threads and they run at 25% CPUs, jamming the system up. Ive also noticed something keeps closing antiviruses and services.exe when i try to open them. (I see all this via PROCESSEXPLORER from the second account with admin privileges). I cannot run SERVICES.EXE, but i can run regedit, msconfig, task manager, etc. Ive done SFC/scan as well as CHKDSK and it found some corrupt files and "fixed them", but the issue persist. Ive downloaded FRST, roguekiller, combofix, adwcleaner,. I have not run them, I am awaiting assistance (from you guys). please help me!!!! thank you in advance!
  19. I've read the posts on similar failures. My BSOD happened as I was running Defraggler overnight. I can find no malware or other cause. This is my first encounter with this particular BSOD, which was annotated: RECOVERY FILE DRIVER EXTENSION what failed: Farftc.sys Attached is my mb-check-results zip, plus the FRST and Addition files just for the sake of completeness. Any information you can provide on what went wrong and how I can prevent such failures in the future would be greatly appreciated. Thanks again for your product, which I have used for many years successfully. mb-check-results.zip FRST.txt Addition.txt
  20. Every time when i start Malwarebytes BSOD appiers. In safe mode it runs. Tried support tool, but if i run it, it causes BSOD. ADWcleaner, and another malwarebytes production works OK. Win7 home basic; 8gb RAM; intel pentium g2030 14d premium version.
  21. MBAM 3.5.1 Premium for Windows 7 on a 32-bit Dell laptop worked fine. Tried to install MBAM 3.6.1 days ago first without clean install and BSOD upon reboot. Did a clean install today using the MBAM Support Tool and after rebooting and almost at the end of the reinstalling, a blue screen of death again. I have attached logs. I also have the MEMORY.DMP file zipped, but its 139 MB, so if you need, please let know how to send. I also ran a full drive security scan with MBAM v3.5.1 just prior to the 3.6.1 clean install and no malware found. Other security software on this machine Zone Alarm Firewall and Anti-Virus Pro v15.3.060.17669 and SpyShelter Premium v11.2, both latest versions. I have reverted back to MBAM v3.5.1 until this issue is resolved. mbst-grab-results.zip mbst-clean-results.txt
  22. Bonjour Je viens vous demander de l'aide concernant un BSOD a chaque analyse personnalisée avec l'option "recherche de Rootkit". En effet, a chaque fois que je lance une analyse avec cette option cochée, un BSOD surviens après 10 secondes . Lorsque je lance une analyse personnalisée sans l'option rootkit, l'analyse réussit. J'ai une version premium a vie (la dernière version 3.4.4) depuis 5 ans, et c'est la première fois que cela arrive... Tout est ok sur mon PC (RAM, DRIVERS, ZERO INFECTION, MATERIEL OK, TESTE CPU OK .....) Je suis Helper, donc j'ai déjà fais toutes les recherches d'infection ou matériel .... Le BSOD surviens uniquement en lançant l'analyse MBAM Pourriez-vous me dire si cela concerne un bug de MBAM SVP? I come to ask you for help regarding a BSOD with each analysis personalized with the option "search of Rootkit". Indeed, every time I run a scan with this option checked, a BSOD will occur after 10 seconds. When I run a custom scan without the rootkit option, the scan succeeds. I have a premium version for 5 years (Version 3.4.4), and this is the first time it happens ... Everything is OK on my PC (RAM, DRIVERS, ZERO INFECTION, HARDWARE OK, TEST CPU OK) I am a Helper, so I have already done all the research of infection or equipment .... The BSOD only happen by launching the MBAM analysis Could you tell me if this concerns an MBAM bug please ? Merci pour vos réponse et votre aide jmi
  23. I'm getting the BSOD with farflt.sys listed as the cause. I've seen that others have had the same problem, but the topics were fairly old so I thought it best to start a new one. The machine is an HP Compaq PC. I reinstalled Windows 7 Pro 32-bit yesterday and put all the software on top, including MB Premium. I had to install MB twice because it errored, but it went on okay second time and I was using the PC for a few hours without problems last night. As well as installing software like Office, and setting up Outlook, I've run Windows Update and installed all the updates it wanted, including SP1. This morning it started BSOD on boot, with farflt.sys given as the culprit. Windows runs okay in Safe Mode but not in normal mode. Following instructions given in other posts I ran mb-clean in Safe Mode, which seemed to work okay, rebooted into Normal Mode, which came up okay, then re-installed MB. It seemed to install okay but didn't even wait until I rebooted before it went BSOD. I've run FRST and MB-Check and attached the zip file, and also attached the minidump file from one of the BSOD's, so I'm hoping someone will be able to tell me what's wrong. I'm running AVG Free - does MB "fight" with AVG? The built-in Windows virus checker is running as well, so is there a problem there? I've also installed Trusteer Rapport, which my bank recommends, but it's created by IBM so should be safe. I don't want to have to turn off anti-ransomware in MB, as the main reason I bought MB was because I was the victim of a ransomware attack a few years ago, which fortunately didn't cause much damage as I saw what was happening very early and stopped it. If anyone can tell me what's happening and how to stop it I'd be grateful. mb-check-results.zip 090118-29406-01.dmp
  24. Just had to uninstall Malwarebytes. I kept getting BSoD on farflt.sys. Although my machine was supposedly writing a dmp file there is none to be found. No idea why it's just started (literally today 25/8) as there haven't been any updates either hardware or software to my machine. mbst-grab-results.zip
  25. Hello, For the past week i've been having trouble with BSODs, "Bad_Pool_Caller" i tried reading the dump files and all i could understand from them is that malwarebytes could be causing them. The files are attached in the form of a rar file Any help is much appreciated Minidump.rar
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