Windows 10 October 2018 Update causing BSODs on some HP systems

First Microsoft had to pull the Windows 10 October 2018 Update due to a file deletion bug linked to the use of Known Folder Direction and now we hear that users of some HP PCs are seeing blue screens of death (BSOD) after installing the update on their desktops and laptops.

The Register posted stories of users who are no longer able to boot their HP machines after installation of Windows 10 October 2018 Update:

"After installing KB4464330 (build 17763.55) my HP EliteDesk 800 G3 the machine refuses to boot, ending with BSOD WDF_VIOLATION," wrote a user identified as "Mikael Sillman," who also reports hearing from Microsoft support that Dell machines have been affected too.

The error code refers to an issue with the Windows Driver Framework.

A post to HP's support forum had a similar tale.

"After doing updates, this machine blue screens with the error message WDF_VIOLATION," wrote an individual identified as "PhilBJSPC." "I cannot boot to safe mode and it does not allow me to do a system restore before the updates have gone through. …"

The issue seems to be caused by a HP keyboard driver file, and some users can fix the issue by renaming the file:

From the command prompt, this involves navigating to c:/windows/system32/drivers and renaming the file – ren HpqKbFiltr.sys HpqKbFiltr.sys_old – and rebooting.

At the moment, there's no official response from Microsoft nor HP.