Fix Windows Memory Integrity Without Guessing at Drivers
Matthew Leo · Published September 29, 2026 · Guides
Windows 11 may say Memory integrity is off, or refuse to turn it on because of an incompatible driver. The alert can look urgent, but it does not mean the driver is malware. The useful next step is to identify the device or app behind it and find a compatible update before changing a security setting.
Memory integrity is a Windows protection that checks code running in a highly privileged part of the system. Microsoft also calls it hypervisor-protected code integrity. It uses hardware virtualization, so the option may be unavailable on a PC whose firmware does not support or enable that feature. This guide is for a personal Windows 11 PC; workplace devices may be managed by an administrator.
Check the setting first
Open Start → Settings → Privacy & security → Windows Security → Device security → Core isolation details. Look for Memory integrity. Microsoft says the same feature can be reached from the Windows Security app's Device security page. If it is already on, you do not need to toggle it for this guide. If it is off and the switch works, turn it on and follow any restart prompt, then return to the page to confirm its final state.
If the Core isolation page or switch is missing, check Microsoft's device-security guidance before changing firmware settings. The options shown depend on Windows version and hardware. Memory integrity requires hardware virtualization in UEFI or BIOS. A firmware change can affect other software or boot configurations, so use your PC maker's instructions and do not guess at unfamiliar settings.
When Windows names an incompatible driver
Write down the driver file and publisher Windows displays. Think about which printer, webcam, audio device, utility or older peripheral might have installed it. Check Windows Update, including its optional driver updates, and the device maker's official support page for a newer version. Prefer the manufacturer's driver over a third-party “driver updater.” Restart after a supported update and try the Memory integrity switch again.
Microsoft says a driver already installed on the PC can prevent the feature from turning on. If no compatible update exists, removing the device or application that uses the driver may be an option. Before doing that, confirm you can live without the device and have its installer or recovery method. Do not delete a driver file from the Windows folder simply because a forum post names it; the file may be shared or needed for startup.
The warning can also run in the other direction: if Memory integrity is on, Windows may block an older driver when you connect a device or launch an app. Microsoft's driver warning page says to look for an updated compatible driver through Windows Update or the manufacturer first. It notes that the listed driver is not necessarily malicious.
Should you turn it off to make a device work?
Microsoft documents a way to turn Memory integrity off, followed by a restart, when a required driver has no compatible version. That is a trade-off, not a general fix. On a Secured-core PC, Microsoft says turning it off removes that secured state. If an old peripheral is optional, keeping the protection and replacing or retiring the peripheral may make more sense. If the device is essential, document why you disabled the feature and check again when its maker releases an update.
For a work or school PC, ask IT before changing the setting. An organization may enforce it through policy or depend on a specific driver. If Windows will not start or a critical device stops working after a driver update, use the manufacturer's recovery guidance or your IT support rather than trying random registry commands.
What this setting does not replace
Memory integrity adds a boundary around low-level code, but it does not replace current Windows updates, device-maker firmware, backups or careful software installation. It is also different from the vulnerable-driver blocklist and hardware-enforced stack protection, though Microsoft describes how these features interact on supported PCs. For the broader update picture, Mapletechie has a Windows 11 support check. The immediate task here is narrower: identify the incompatible driver, update it from a trusted source, and verify whether Memory integrity stays on after the restart.
Tags: Windows 11, Memory integrity, drivers, Core isolation, Guide