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i think this windows update crashed my computers KB4494440

i think this windows update crashed my computers KB4494440

i have mostly Lenovo laptops and dell computers, when i checked after pushing this update , the update failed but the laptops still keep crashing

errors coming from FLTMGR.SYS, restore computers are also failing

https://www.tenable.com/plugins/nessus/125058

Ashvin Ashok

This means that this driver allows the direct access to the internal hardware from the CPU itself. For those who are curious, fltmgr.sys is located in C:\Windows\System32\drivers.

Run " sfc/scannow " and run " chkdsk c: /f /r " to check and repair disk errors on your C drive

IT Guy

ASKER

ok running this now to test - after will see if it crashes again, i had to reset 2 laptops because i could't figure out how to remove the update, it did not show that the update was installed on the computer

John

In addition to all the above, be sure to update BIOS (Lenovo DOES have BIOS updates), Chipset and all other drives (Lenovo System Update and replicate the idea on Dell).

Restart and try updating again.

IT Guy

ASKER

yes i did all the system updates with the lenovo software and dell also - it was crashing during the updates hahaha

John

Then there may be some legacy software conflicting ? Possibility to consider.

Open cmd.exe with Run as Administrator and run:

1. SFC /SCANNOW. Allow it to complete.
2. dism.exe /online /cleanup-image /restorehealth

Once all is complete, restart and test.

nobus

any errors in device manager? if so uninstall the problem device, and reinstall with latest driver
check also for dmp files in windows\minidumps - post it here for more info

IT Guy

ASKER

no errors on device manager - some laptops was running well for almost 3 yrs until this update

i added a snapshot of the minidump in my origional question

running sfc /scannow and chkdsk did not work - laptops and PC's still rebooting

any other tips i can try?

ASKER CERTIFIED SOLUTION

John

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IT Guy

ASKER

here is the bluescreen

John

How many machines do this?

In most of the cases I have seen with this blue screen error, the computer needs to be re-imaged.

IT Guy

ASKER

22 of my computers, both Lenovo laptops and Dell workstations

John

Try the fixes noted in this article below
https://windowsreport.com/bsod-kernel-auto-boost-lock-acquisition-with-raised-irql/

The error still points to drivers.

nobus

why not post the dmp file ? usually it has more info on the problem
and the screenshot - where does that come from?

IT Guy

ASKER

sure - here is the minidump file

this is the bluescreen error i got from one of my lenovo laptops experiencing the issue

052919-89625-01.dmp

John

The error (0x192) indicates the error I posted above.

https://docs.microsoft.com/en-us/windows-hardware/drivers/debugger/bug-check-0x192--kernel-auto-boost-lock-acquisition-with-raised-irql

There is a Troubleshoot Blue Screen link in the article.

nobus

i get a faulting farflt.sys problem - related to mbam
try uninstalling that and test again

IT Guy

ASKER

what exactly should i uninstall > i looked for the windows update but it failed on the laptops/pc's so nothing to remove there

is there something else i can uninstall

nobus

that = mbam

IT Guy

ASKER

so refreshing the computers stopped the crashing - thanks for all your help

John

You are very welcome and I was happy to help you