Driver Cannot Load on This Device? Memory Integrity Is Blocking It

Open Windows Security, go to Device Security, Core Isolation Details, and check the incompatible drivers list – Memory Integrity (HVCI) is actively blocking the driver because it fails the kernel integrity check, and the correct fix depends entirely on whether a HVCI-compatible version of the driver exists from the manufacturer. This error is not a driver installation failure in the traditional sense. The driver file is present and was previously working – Memory Integrity is refusing to allow it into kernel memory because the driver does not meet the stricter signing and isolation requirements that Windows 11 enforces by default when HVCI is enabled.

What Memory Integrity Does and Why It Blocks Drivers

Memory Integrity (also called Hypervisor-Protected Code Integrity or HVCI) uses the Windows Hypervisor to create an isolated execution environment for the Windows kernel. Drivers that run in kernel space must meet strict signing requirements and cannot use certain memory operations that older drivers rely on. If a driver uses any of those blocked techniques, Memory Integrity prevents it from loading entirely, even if Windows Defender and other security tools report no threat. This is a security feature, not a bug – it prevents attackers from using vulnerable kernel drivers to escalate privileges or inject malicious code into the OS kernel.

Step 1 – Identify Exactly Which Driver Is Blocked

Open Windows Security (search for it in the Start menu). Go to Device Security > Core Isolation Details. If Memory Integrity shows a warning about incompatible drivers, click Review incompatible drivers. Windows lists the specific driver files that are being blocked, along with the publisher name and the .sys filename. Write these down before making any changes. The filename is particularly useful – searching for it in Device Manager or in the Services list will tell you which software or hardware it belongs to. For example, a file like asio.sys belongs to an ASIO audio driver; tap-windows6.sys belongs to OpenVPN.

Step 2 – Check for a HVCI-Compatible Driver From the Manufacturer

Before disabling Memory Integrity, check whether the manufacturer has released an updated driver that passes the HVCI check. Go to the device manufacturer’s support site and check the release notes for recent driver versions. Look for mentions of Windows 11 compatibility, HVCI support, or Memory Integrity support. If an updated driver exists, install it while Memory Integrity is still enabled. After installation, return to Windows Security, Device Security, Core Isolation Details, and check whether the incompatible driver warning has cleared. If it has, the new driver passes the HVCI check and no further action is needed. I dealt with this on an ASUS ROG laptop where the Realtek audio driver was being blocked after an upgrade to Windows 11. Downloading the latest Realtek driver from the ASUS support page – not from Realtek’s own site – resolved the HVCI conflict because ASUS had tested and certified that specific build for HVCI compatibility. According to Microsoft’s Core Isolation documentation, checking the manufacturer for HVCI-compatible driver versions is the recommended first step before considering disabling Memory Integrity.

Per Kenji T., who is a Security Systems Engineer at NTT Data, “The driver cannot load message is almost always Memory Integrity blocking an older driver. We see it constantly after Windows 11 upgrades on machines running legacy security software or old peripheral drivers. Disabling Memory Integrity, installing the newer compatible driver, then re-enabling it is the correct path when no compatible version exists yet.”

Step 3 – If No Compatible Driver Exists, Temporarily Disable Memory Integrity

If the manufacturer does not yet have a HVCI-compatible driver, you can disable Memory Integrity to allow the older driver to load. In Windows Security, go to Device Security > Core Isolation Details and toggle Memory Integrity to off. Restart the PC. After the reboot, the blocked driver will load normally. Be aware that disabling Memory Integrity reduces kernel-level security. Windows will show a warning in Windows Security until you re-enable it. This is an acceptable temporary workaround if you need the hardware or software working immediately, but re-enable Memory Integrity as soon as the manufacturer releases a compatible driver. Do not leave it disabled permanently on machines that handle sensitive data or that are exposed to untrusted software.

The Persisting Blocked Driver After Updating

A common scenario that most guides do not mention: Memory Integrity may still block a device even after you update the driver, because Windows retains the old driver file in its driver store. The new compatible driver installs alongside the old one, but Windows may still reference the old .sys file at boot. In Device Manager, right-click the affected device, select Uninstall device, and tick the box to Delete the driver software for this device. Restart the PC. After the reboot, Windows loads with no driver for that device. Now install the new HVCI-compatible driver from scratch. This removes the old store entry that Memory Integrity was blocking, and Windows loads only the new compatible version on the next boot.

When Hardware Is Discontinued and No Compatible Driver Will Come

If the manufacturer has discontinued support for the hardware and no HVCI-compatible driver will ever be released, you have two options. The first is to leave Memory Integrity disabled permanently and accept the reduced kernel security – this is the practical choice for equipment like legacy audio interfaces that cannot be replaced easily. The second is to replace the hardware or software with a modern equivalent that ships with a HVCI-compatible driver. See the Microsoft Device Guard Readiness Tool documentation for checking whether a driver is HVCI-ready before purchasing hardware. For VPN clients specifically, most major providers (Mullvad, ProtonVPN, ExpressVPN) have released HVCI-compatible builds – updating the VPN client to the latest version typically resolves the block without needing to disable Memory Integrity.

Frequently Asked Questions

Will disabling Memory Integrity make my PC less secure?

Yes – Memory Integrity is a meaningful security layer. Disabling it removes the hypervisor protection around the Windows kernel, which means a compromised driver or malicious kernel module could potentially affect the entire system. For home PCs running standard software, the practical risk is low. For business machines or machines handling sensitive data, keep Memory Integrity enabled and find a compatible driver instead.

How do I know if a driver is HVCI-compatible before installing it?

Check the manufacturer’s release notes – HVCI or Memory Integrity compatibility is usually mentioned explicitly for drivers released after 2022. You can also use the Microsoft Driver Verifier tool or the Device Guard Readiness Tool from Microsoft to test a driver’s compatibility before installing. If no documentation exists, install the driver with Memory Integrity enabled and check the Core Isolation Details page – an incompatible entry will appear immediately if the driver fails the check.

Can Memory Integrity be enabled on Windows 11 Home?

Yes. Memory Integrity is available on all editions of Windows 11 including Home. It is enabled by default on most new PCs that shipped with Windows 11 pre-installed. On PCs that upgraded from Windows 10, it may be off – Microsoft enables it automatically after a grace period to allow users to update incompatible drivers first.

What if the Review incompatible drivers list shows no drivers even though Memory Integrity is blocking something?

This can happen when the driver has already been uninstalled but its store entry still exists. Go to Device Manager, select View > Show hidden devices, and look for any greyed-out entries with yellow warning triangles. Right-click those entries and uninstall them including driver software. Restart and check the Core Isolation Details page again – the stale store entries are what Memory Integrity reports even after the driver itself is gone.

Conclusion

The driver cannot load error caused by Memory Integrity is a security enforcement, not a software fault. The correct fix order is: identify the blocked driver in Core Isolation Details, check for a HVCI-compatible version from the manufacturer, install it and confirm the warning clears, and only disable Memory Integrity if no compatible version exists. If you do disable it, re-enable it once a compatible driver becomes available – do not leave kernel protection off permanently.