Post-CrowdStrike: Microsoft to Phase Out OEM Kernel-Level Driver Privileges

For years, driver-related failures have appeared with relentless regularity. Whether produced by hardware manufacturers or software vendors, faulty drivers have long been capable of destabilizing Windows—sometimes catastrophically. The most notorious recent example was the global blue-screen outage in July 2024, triggered by a CrowdStrike driver.

In light of such incidents, Microsoft is establishing a new driver standard and plans to phase out OEM kernel-level privileges. In other words, hardware vendors and software developers will no longer be permitted to inject driver code directly into the kernel, ensuring that a driver crash no longer brings down the entire operating system.

Microsoft’s vision is that all signed drivers will eventually be required to meet far stricter security and reliability standards and pass a new battery of certification tests. Over the next several years, the volume of code operating in kernel mode will be sharply reduced, including drivers responsible for networking, cameras, USB, printers, and storage devices.

To support this shift, Windows is developing expanded built-in drivers and standardized APIs. OEMs and software developers will be able to replace their custom or proprietary kernel-level modules with these Windows-native drivers—stabilizing the OS and reducing overall system bloat.

Vendors will need either to adopt these standardized drivers or migrate their operational logic from kernel mode to user mode, ensuring that core functions continue to work while driver privileges are cleanly separated from the kernel.

However, Microsoft has also clarified that Windows will continue to support third-party kernel-mode drivers and will not constrain innovation in areas where no standardized driver exists. For example, GPU graphics drivers will continue to run in kernel mode.

For drivers that must remain in kernel space, Microsoft is introducing several practical safeguards designed to improve quality and contain failures before they escalate into system-wide crashes. These include new mandatory compiler-level security constraints, driver isolation to limit the blast radius of faults, and DMA remapping to prevent unintended access to kernel memory.

Finally, based on current information, Microsoft is unlikely to restrict kernel-level anti-cheat drivers. Although such modules have historically caused security vulnerabilities or system instability, game developers will continue to rely on kernel-mode anti-cheat solutions unless and until Microsoft produces a standardized alternative.

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