Microsoft has acknowledged that recent changes in the Windows 10 2004 package are causing crashes on Lenovo ThinkPad laptops. The company offers several ways to solve this problem.
Crashes occur after installing the July update KB4568831and Lenovo ThinkPad owners are experiencing "SYSTEM_THREAD_EXCEPTION_NOT_HANDLED" and "0xc0000005 Access Denied" errors. Representatives Lenovo found outusers 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 launching a Windows Defender scan;
- inability to log in through Windows Hello and face recognition;
- Device Manager problems related to Intel Management Engine;
- Errors in Device Manager related to infrared camera.
Microsoft explainsthat the KB4568831 update and later restrict the access of processes to 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, "the developers write.
Microsoft engineers say they are currently working with Lenovo on a patch that should fix the glitches (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.