Resolve an incompatible driver blocking Memory integrity safely

Memory integrity protects code running in the Windows kernel, but an old driver can prevent it from turning on. The wrong response is deleting a random .sys file or forcing the switch while a storage or security device still depends on that driver. Microsoft documents driver compatibility requirements. Identify the blocking filename, vendor and actual hardware first, then update or remove the owning software through its supported uninstaller and check that the device still works.

Before you start​

Back up files and ensure a recovery route exists. Record the exact incompatible-driver message in Windows Security > Device security > Core isolation. Inspect installed apps and hardware for that vendor. On a work PC, ask IT before changing VPN, storage, biometric or endpoint-security drivers. Do not download a driver from an arbitrary catalog site.

Do it step by step​

1. Open Core isolation details and note each driver name and publisher. Confirm Memory integrity is actually Off or blocked, rather than assuming a banner describes your current state.
2. Find the corresponding device in Device Manager or the owning software in Settings > Apps. Record current version, device hardware ID and a way to reinstall it.
3. Check Windows Update > Advanced options > Optional updates and the hardware maker's official support page for a driver explicitly compatible with your Windows build.
4. Install the supported replacement or remove an unused device's software through its vendor uninstaller. Restart and test the device before deleting any leftover driver package.
5. Return to Core isolation and try enabling Memory integrity if Windows reports the blocker resolved. Restart when prompted and confirm it stays On.
6. Test storage, network, webcam, VPN or other affected hardware under normal use. If a critical device fails, restore the supported driver and seek vendor guidance rather than leaving a broken system.

Check the result​

Memory integrity reports On after restart and the original device works, with no new Code Integrity error during use.

If something goes wrong​

If the name is ambiguous, use the driver properties and signed publisher information to map it to hardware. A driver may be hidden because the device is unplugged. Do not remove an unknown OEM driver solely to make the warning disappear.

Know the limit​

Hardware and firmware support vary. Disabling Memory integrity to keep an abandoned driver working is a security tradeoff; document it and plan a supported replacement. Manual deletion of system driver files can prevent boot. Microsoft driver compatibility Virus and threat protection

Decision checkpoint​

Preserving hardware function and kernel protection may require replacing abandoned hardware. If the manufacturer has no compatible driver, document the affected device and assess whether it is essential. Before uninstalling, check whether the driver belongs to a dock or peripheral that is merely disconnected. After an update, test more than Device Manager status: connect the peripheral, use its core function and watch for fresh security warnings. This avoids claiming a fix based only on a green toggle.

Aftercare​

Recheck after the next driver update. A green security toggle is valuable only when the connected hardware and everyday applications remain reliable.