Check Windows memory integrity after a driver warning

Memory integrity is a Windows core-isolation feature that helps prevent low-level drivers from being used to compromise the system. A driver conflict can stop it being enabled or appear after hardware installation. The right first step is to identify the driver, not disable protection blindly.

Before you start​

Write down the device that recently changed, such as a printer or USB adapter. Save open work before updates or restarts and use a normal administrator account.

Do it step by step​

1. Open Windows Security → Device security → Core isolation details and record the Memory integrity state. Available controls vary by Windows version and hardware.
2. If Windows reports incompatible drivers, open the details and note the exact driver file and vendor. Do not delete a file from System32 simply because it appears in the list.
3. Check Windows Update and the device manufacturer's official support page for a compatible driver. Match the device model and Windows version; avoid generic driver-download sites.
4. Update or remove the related device software through its normal installer or Windows settings. Restart if prompted, then return to Core isolation details.
5. Turn Memory integrity on when the driver conflict has been resolved. Restart if Windows requests it and test the device's essential function afterward.

Check the result​

After the restart, Windows Security should show Memory integrity on and the device should still work. Record which update resolved the conflict for future hardware changes.

If something goes wrong​

If no compatible driver exists, weigh whether the hardware is still supportable and contact the vendor or IT. Do not repeatedly toggle the feature or install a random replacement driver. On a managed device, policy may set the state.

Know the limit​

Memory integrity is one protection layer and does not replace patches or backups. Microsoft explains its virtualized code-integrity mechanism and why an incompatible driver can block it. Microsoft's Device security explanation