As if the fiasco generated by the release of Windows 10 version 1809 wasn’t enough, the first cumulative update for the October 2018 Update is also creating significant issues on users’ computers, including the infamous Blue Screen of Death (BSOD).
At first glance, it looks like cumulative update KB4464330 BSOD glitches mostly hit HP computers, though I’ve seen users claiming the same problem exists on other hardware configuration too.
In all cases, computers crash with an WDF_Violation error after installing this month’s cumulative update on Windows 10 October 2018 Update, and the BSOD shows up right when loading the operating system.
In other words, it’s impossible to log in to the desktop and remove the update, so without further assistance, a number of users, beginners in particular, could end up having a completely broken down system.
Fortunately, even if access to the desktop isn’t available, you may still be able to resolve the issue, at least until Microsoft officially acknowledges the problem.
Because no, Microsoft hasn’t said anything about this bug and although it claims it’s investigating, no workaround has been provided. Furthermore, the official KB page of cumulative update KB4464330 still indicates there’s no known issue hitting the patch.
Both recovery methods rely on the troubleshooting menu that you can use before logging into Windows. This screen typically shows up when the computer crashes, but you can also access it manually by pressing the power button during the boot sequence or various methods that are specific to each computer (check your device manufacturer’s page for info in this regard).
Option 1: Safe Mode and update removal
Once you access the troubleshooting screen, there are two options that you can use, and the first is booting into Safe Mode and then removing the update.
To do this, you need to go Troubleshoot > Advanced Options > Startup Settings > Safe Mode and then log into Windows with an administrator account.
Once logged in, head over to Settings > Update & security > Windows Update > View update history > Uninstall updates and look for KB4464330. Right-click this patch and then click uninstall.
Reboot your system and let it load Windows 10 normally. You should now be able to log into the PC without a BSOD occurring at boot.
Option 2: Advanced troubleshooting
We’re hearing from users that logging into Windows in Safe Mode doesn’t work either, with a BSOD breaking it down too, so in this case, the workaround is a bit trickier.
In the same troubleshooting menu, head over to Advanced startup > Troubleshoot > Advanced options > Command Prompt and then type the following commands one by one:
ren HpqKbFiltr.sys HpqKbFiltr.sys.old
Your system should then reboot and loading Windows should work correctly, again without the BSOD happening at boot.
NOTE: The second method is specifically aimed at HP devices, and if you run these commands on a different computer, you may not be able to find the indicated files.
If you have created a restore point before installing the cumulative update, which appears to become a must-do every once in a while on Windows 10 computers, you can also restore to it and then block KB4464330 from re-installing.
Given that Microsoft hasn’t yet acknowledged the issues experienced with this cumulative update, it’s not known exactly when and if a fix is planned, so make sure you give these workarounds as try. If nothing works, you can also go for a clean-install or in-place upgrade, but needless to say, this involves more work and backing up data on the local drives.