Microsoft explained why Windows 10 crashes on Lenovo laptops

Microsoft has admitted that after recent changes, Windows 10 2004 crashes on Lenovo ThinkPad laptops. The company offered several solutions to solve this problem.

Crashes occur after installing the July update KB4568831, and Lenovo ThinkPad owners face “SYSTEM_THREAD_EXCEPTION_NOT_HANDLED” and “0xc0000005 Access Denied” errors.

These issues are caused by incompatible drivers conflicting with the virtualization features of Windows 10.said Lenovo engineers.

Lenovo has determined that users of ThinkPad devices (2019-2020) may experience other issues if they have Enhanced Windows Biometric Security enabled. Problems may include:

  • BSoD at boot;
  • BSoD when launching Lenovo Vantage;
  • BSoD when starting Windows Defender scan;
  • inability to log in through Windows Hello and face recognition;
  • Problems in Device Manager operation related to Intel Management Engine;
  • Errors in Device Manager related to the IR camera.

Microsoft explains that update KB4568831 and later restrict processes from accessing certain areas of memory, namely PCI Device Configuration Space. If the process tries to access PCI Device Configuration Space in an incorrect way, Windows 10 will crash and the user will see an error.

New restrictions prohibit malicious processes from modifying the Configuration Space of protected devices. Device drivers and other system processes should not attempt to manipulate the configuration space of any PCI device, except by using the Microsoft-provided bus interface and IRP. If a process tries to access PCI configuration space in an unsupported way (for example, by parsing the MCFG table and mapping the configuration space to virtual memory), Windows denies access and generates an error”write the developers.

Microsoft engineers say they are currently working with Lenovo on a patch that should fix the issues (exact timing of the patch has not been disclosed).

For those users who do not want to wait for the patch release, Microsoft has offered a temporary option: disabling the Enhanced Windows Biometric Security feature in the laptop’s UEFI.

Let me remind you that we talked about how hackers attack Lenovo NAS, destroy data and demand ransom.

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Emma Davis

I'm writer and content manager (a short time ago completed a bachelor degree in Marketing from the Gustavus Adolphus College). For now, I have a deep drive to study cyber security.

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