How to Fix Windows 11 MEMORY_MANAGEMENT and KERNEL_SECURITY_CHECK_FAILURE BSOD (2026)

What Causes MEMORY_MANAGEMENT and KERNEL_SECURITY_CHECK_FAILURE BSODs?

These two blue screen error codes are among the most commonly reported on Windows 11 in 2026. While their names sound different, both point to the same category of problem: Windows detected that something is writing to or reading from memory in a way that violates the OS's integrity rules.

MEMORY_MANAGEMENT means Windows detected a serious error in its own memory management system — usually caused by faulty RAM, overclocked memory running outside stable parameters, or a driver that is mishandling memory allocations.

KERNEL_SECURITY_CHECK_FAILURE means a data structure in the kernel was corrupted at runtime — most commonly triggered by incompatible drivers, anti-cheat software, or (as of early 2026) a specific GPU bug patched in Windows 11 Build 26200.7840.

Step 1: Install the February 2026 Windows Update (GPU BSOD Fix)

In February 2026, Microsoft confirmed a bug where certain GPU configurations triggered KERNEL_SECURITY_CHECK_FAILURE related to dxgmms2.sys. This affects systems running specific combinations of discrete and integrated graphics.

The fix is included in Windows 11 Build 26200.7840 and later. Check your build: press Win + R, type winver, and press Enter. If your build is older than 26200.7840, go to Settings > Windows Update > Check for updates and install all available updates.

Step 2: Run Windows Memory Diagnostic

Faulty or unstable RAM is the single most common cause of MEMORY_MANAGEMENT BSODs. Test your RAM before spending time on software fixes:

1. Press Win + R, type mdsched.exe, and press Enter.
2. Select Restart now and check for problems.
3. The tool runs during boot and reports results when Windows loads again.

If errors are found, reseat your RAM sticks (power off, remove, reinsert firmly) and retest. If errors persist across multiple slots, the RAM stick itself is faulty and needs replacement.

Step 3: Disable XMP/EXPO Memory Overclocking

XMP (Intel) and EXPO (AMD) profiles run your RAM at speeds above its base specification. While these profiles are generally stable, they are the most common cause of MEMORY_MANAGEMENT crashes on otherwise healthy hardware.

Enter your BIOS/UEFI at startup (typically F2, Del, or F10) and disable XMP/EXPO to run RAM at its rated JEDEC speed (usually 3200 MHz or lower). If the BSODs stop, your XMP profile is too aggressive for your specific RAM/motherboard combination — try a lower XMP frequency rather than fully disabling it.

Step 4: Update or Roll Back GPU and Chipset Drivers

Driver conflicts are the leading software cause of both BSOD types. Check which driver is cited in the crash dump:

1. Press Win + S, search for View reliability history, and click it.
2. Click on a BSOD event to see the failing module name (e.g., nvlddmkm.sys = NVIDIA, amdkmdag.sys = AMD).

If the failing module is a GPU driver, update it through Device Manager > Display adapters > Update driver or download directly from NVIDIA/AMD. If a recent driver update caused the crashes, roll back: Device Manager > Display adapters > Properties > Driver > Roll Back Driver.

Also update chipset drivers from your motherboard manufacturer's website — outdated Intel or AMD chipset drivers cause memory subsystem instability.

Step 5: Uninstall Anti-Cheat Software and Third-Party Security Tools

Kernel-level anti-cheat systems (used by games like Valorant, Genshin Impact, Marvel Rivals) run at ring-0 privilege and directly interact with kernel memory structures. Conflicts with Windows 11's security features cause KERNEL_SECURITY_CHECK_FAILURE on some systems.

If the BSODs correlate with gaming sessions, uninstall the game's anti-cheat component (not just the game) and test stability. Anti-cheat uninstallers are usually in the game's installation folder.

Similarly, third-party antivirus software installs kernel hooks that can trigger security check failures. Try uninstalling completely (not just disabling) to rule this out.

Step 6: Disable Memory Integrity (Core Isolation)

Windows 11's Memory Integrity (also called Kernel-mode Hardware-enforced Stack Protection) prevents untrusted code from running in kernel memory. While this is a valuable security feature, it conflicts with some older drivers that are not signed for this protection level.

1. Go to Windows Security > Device Security > Core isolation details.
2. Toggle Memory integrity to Off.
3. Restart and test.

If BSODs stop, you have an incompatible driver. Check Core isolation details for a list of incompatible drivers and update or remove them before re-enabling Memory Integrity.

Step 7: Run SFC and DISM to Repair System Files

Corrupted Windows system files can cause memory management errors. Run these repairs in order:

sfc /scannow

Open Command Prompt as administrator (right-click Start > Terminal (Admin)) and run the command above. If SFC finds errors it cannot fix, follow with:

DISM /Online /Cleanup-Image /RestoreHealth

DISM downloads and replaces corrupted system files from Windows Update. After both commands complete, restart and test.

Step 8: Check the Crash Dump for the Root Cause

Windows saves a mini dump file every time a BSOD occurs. Reading it gives you the exact failing driver or module:

1. Download WinDbg Preview from the Microsoft Store (free).
2. Open WinDbg, go to File > Open dump file.
3. Navigate to C:\Windows\Minidump\ and open the most recent .dmp file.
4. Type !analyze -v in the command window and press Enter.

The output includes the exact module causing the crash, an error description, and sometimes a suggested fix. This is the most reliable method for identifying the root cause when generic fixes do not resolve the issue.

If the dump analysis points to a driver or component you cannot resolve yourself, CloudHouse Technologies offers per-ticket Windows support — send us the dump file and we will diagnose it for you.

Frequently Asked Questions

What causes MEMORY_MANAGEMENT BSOD on Windows 11?

The most common causes are: faulty or unstable overclocked RAM (XMP/EXPO profiles), outdated or incompatible GPU/chipset drivers, and corrupted Windows system files. Run Windows Memory Diagnostic first — if RAM tests clean, focus on driver updates.

What is KERNEL_SECURITY_CHECK_FAILURE on Windows 11?

It means a kernel data structure was corrupted at runtime. Common causes are kernel-level anti-cheat software, incompatible drivers, and (in early 2026) a GPU bug in dxgmms2.sys patched in Windows 11 Build 26200.7840. Install Windows updates first, then investigate drivers.

How do I find which driver caused a Windows 11 BSOD?

Open Reliability Monitor (search for "View reliability history"), click the BSOD event, and look for the failing module name. Alternatively, use WinDbg Preview from the Microsoft Store to open the crash dump file at C:\Windows\Minidump\ and run !analyze -v for a detailed report.

Will disabling Memory Integrity fix KERNEL_SECURITY_CHECK_FAILURE?

It can stop the crashes if an incompatible driver is causing the conflict. Go to Windows Security > Device Security > Core isolation details and turn Memory Integrity off. This is a diagnostic step — the goal is to identify the incompatible driver so it can be updated, allowing you to re-enable Memory Integrity afterward.

Can XMP/EXPO RAM profiles cause blue screens on Windows 11?

Yes. XMP and EXPO run RAM above its base JEDEC specification. If the profile is too aggressive for your specific RAM and motherboard combination, it causes MEMORY_MANAGEMENT crashes. Disable XMP/EXPO in BIOS to test stability, then try a lower speed profile if you want to keep the performance benefit.