- Windows 11 suffers from serious graphical errors such as black screens and the KERNEL_SECURITY_CHECK_FAILURE error linked to dxgmms2.sys.
- The KB5074109 update has caused performance drops, glitches, and crashes on systems with NVIDIA GPUs, forcing a recommendation to uninstall it.
- The same patches that attempt to fix bugs have created additional problems in Wi-Fi WPA3 and key applications, affecting the overall stability of the system.
- NVIDIA and Microsoft are investigating these issues while advising temporary solutions such as reinstalling drivers, applying local updates, and avoiding unstable optional builds.
If you've recently noticed your Windows 11 PC acting strangely while gaming, displaying black screens, or experiencing performance drops for no apparent reason, you're not alone. In recent months, several graphical glitches have appeared in Windows 11. related to both system updates and GPU drivers, especially on computers with NVIDIA cards, but also affecting other brands.
The most worrying thing is that some of these errors not only ruin games, but can even completely freeze the computer with a dreaded error screen. Microsoft has had to release emergency patches and acknowledge critical problems These range from crashes related to the dxgmms2.sys file and the KERNEL_SECURITY_CHECK_FAILURE error, to bugs that prevent connecting to Wi-Fi networks with WPA3 security after certain updates.
Serious errors including black screen and KERNEL_SECURITY_CHECK_FAILURE
One of the most striking bugs in Windows 11 is the one that causes the so-called "black screen of death".A complete system freeze that forces a PC restart. Although we traditionally referred to it as a Blue Screen of Death (BSOD), in recent versions of Windows 11 the error appears in black, and in test builds it even appears in green, but the result is the same: a frozen system and an error message.
In this specific case, the text that appears on the screen indicates “KERNEL_SECURITY_CHECK_FAILURE”Behind this message lies a key component: the file dxgmms2.sysThis module is part of the DirectX graphics memory subsystem. When it detects that an internal data structure has been corrupted or a change has occurred that doesn't match what the system expects, Windows stops everything to prevent further damage.
The striking thing is that This is not a completely new mistake.There are user reports dating back to 2023, but several recent changes to the system and graphics memory management have brought the issue to light much more frequently. It affects "certain GPU configurations," according to Microsoft's own update notes, suggesting that the specific combination of graphics card, drivers, and Windows 11 version is involved.
In Microsoft's Feedback Hub, you can find the case of a user who I experienced this error when starting Genshin Impact This occurred when kernel-mode hardware stack protection, an advanced security feature, was enabled. There are also threads on Reddit with similar stories, involving crashes when launching games and constant references to the same kernel error and the dxgmms2.sys file.
After accumulating enough complaints, Microsoft eventually admitted the problem in the notes for a February update.The patch literally stated that it corrected a bug that could cause certain GPUs to experience a system error related to dxgmms2.sys, resulting in the dreaded KERNEL_SECURITY_CHECK_FAILURE. This update is now available through Windows Update, although the rollout is gradual and may take some time to reach all computers.
Windows 11 updates that break graphics performance
Beyond black screens, another major source of headaches in Windows 11 has been Windows 11 updates which, in theory, were meant to improve security and stability, but have ended up having the opposite effect on many machines, especially PCs with NVIDIA graphics cards.
The patch that has garnered the most headlines is the security update identified as KB5074109After its installation, numerous users began to notice very noticeable performance drops in gameswith drops of between 10 and 20 frames per second in demanding titles and a general feeling of instability. Complaints quickly flooded NVIDIA's official forums and platforms like Reddit.
Among the most frequently reported symptoms we find Constant stuttering, flickering, visual glitches, and graphical corruption when loading certain games. Some players report that the system displays black screens just before the desktop finishes booting, while others describe strange artifacts in shadows and elements of the scenery in titles such as Forza Horizon 5, Cyberpunk 2077, Hogwarts Legacy, or Warzone.
Initially, some in the community pointed to the GeForce driver as the culprit, since NVIDIA had released a new Game Ready at the end of January (for example, version 591.86). However, even after reverting to a previous driver, many continued to experience the exact same errors. This led to a closer examination of the operating system and a direct link between the onset of the problems and the installation of KB5074109.
The situation became so obvious that An official NVIDIA administrator, Manuel Guzmán, intervened in the company's forums. to confirm that the technical team was analyzing the case. In their responses, they indicated that everything pointed to a problematic interaction between the Windows 11 update and the GPU drivers, and even recommended that affected users uninstall update KB5074109 as a temporary measure.
NVIDIA's response and the complex relationship with Windows patches
NVIDIA has not limited itself to pointing the finger at MicrosoftDespite the fact that most signs point to the operating system itself as the trigger for the conflict, the green company has publicly acknowledged that reports of graphical anomalies after installing KB5074109 and the latest Game Ready updates are real and that it is trying to reproduce them internally to isolate the cause.
In official threads on their forums, Users from all over the world have shared screenshots, videos, and descriptions of errors.From sudden black screens and corrupted textures to glitchy elements on screen and strange bars at the top of the image when running certain games, the issues have been numerous. One of the cases mentioned refers to a bug in The Ascent, with a visible band at the top, which actually dates back to 2025, but helps illustrate how delicate graphics management can be in certain configurations.
In one of the most quoted messages, Spokesperson Manuel bluntly recommended uninstalling the January update of Windows 11. and revert to a previous system build, stating that, as far as he knew, this was the only way to effectively resolve the issue at that time. In other words, the solution involved removing patch KB5074109, even at the cost of temporarily forgoing security improvements and other fixes included in that same update.
Meanwhile Microsoft has reacted somewhat slowly and with a lack of clarity.The company released another update, KB5074105, promising to fix some of the most noticeable effects of KB5074109, such as black screens at system startup. However, this patch only addressed part of the problem: users continued to report performance issues, micro-stuttering in games, and visual anomalies even after applying the new build.
The situation has reinforced a feeling that many players already had: Windows 11 updates are not always sufficiently tested in real-world gaming scenariosThis isn't the first time a system patch has broken multi-monitor setups, interfered with technologies like G-Sync, or directly impacted DirectX performance. In this context, each new "Update Tuesday" feels almost like a gamble, especially for gaming PCs.
It should be noted that, for now, No equivalent problems have been observed in systems with AMD GPUs specifically related to KB5074109At least in terms of frame rate drops and massive glitches. However, the black screen error associated with the kernel security check failure can also affect AMD and Intel graphics cards, as Microsoft itself has acknowledged in its support documentation.
Wi-Fi WPA3, app crashes, and other side effects of the latest updates
Recent Windows 11 failures have not been limited to the graphics departmentSome of the same updates that have triggered problems with GPUs have also affected other sensitive parts of the system, with quite annoying consequences for both home users and businesses.
One of the mistakes that has caused the most headaches is the one that It prevented connection to certain Wi-Fi networks that use WPA3-PersonalWPA3, the most modern wireless encryption standard. This bug appeared after the installation of a preview update distributed in January, which served as an advance of the final patch in February. In certain scenarios, after applying this optional build, some devices lost the ability to authenticate on specific WPA3 networks.
Microsoft acknowledged the problem in an updated support document, explaining that Only certain networks were affectedwithout providing a complete list. It was also confirmed that this bug was associated with a specific package (identified as KB5074105), and that the fix was included in the general February update that was expected to reach all devices via the stable channel.
In parallel, KB5074109 gained a reputation as a “disastrous” update.In addition to graphical errors and performance drops in games, it caused widespread errors in services such as Outlook and Azure, reboot loops on computers with Secure Launch enabled, problems with Remote Desktop connections to corporate infrastructures, and crashes when starting certain applications, including Microsoft's own email client.
All of this forced the company to launch a cascade of emergency patches within weeksAlthough the most critical fixes arrived relatively quickly, many users were left with the feeling that the operating system is far from rock-solid stability. Some bugs have been mitigated, but others persist intermittently, especially in environments where Windows 11 is combined with very recent GPU drivers.
This climate of uncertainty has led to More and more people are hesitating before installing a new update.This is especially true for PCs dedicated to demanding tasks or competitive gaming. Many users choose to wait a few days, see how other users react, and only then update if no serious bugs are reported. This strategy reduces risk, but it also delays the adoption of important security patches.
Proposed solutions: from reinstalling drivers to a local Windows update
Faced with this accumulation of graphical and stability errors, several solutions and "homemade patches" have been proposed. These solutions can help depending on the type of problem and the specific configuration of each device. There's no single solution, but there are a series of steps recommended by Microsoft, NVIDIA, and the community.
On the driver side, One of the first steps is to perform a clean installation of the graphics driver.In the case of AMD, for example, it has been suggested to use the official tools to completely uninstall the current driver and reinstall the latest version from scratch. NVIDIA offers similar options, and many users resort to utilities like DDU (Display Driver Uninstaller) in safe mode to ensure that no remnants of previous installations remain that could cause conflicts.
However, there have been cases—such as that of a user with an AMD GPU who shared their experience on the Microsoft forums—where Even a clean driver installation has not been enough.When this happens, the next step recommended by some official moderators is to perform an "in-place upgrade" of Windows 11. This process reinstalls the operating system over itself, keeping files and applications, but refreshing the internal components.
To do it, Microsoft suggests downloading the latest Windows 11 installation image from its official website.Run the wizard on your computer and select the "Update this PC now" option. During the process, it's important to check the box to keep your personal files and programs. Although nothing should be deleted, it's always advisable to back up important data beforehand, just in case something goes wrong.
In more extreme cases, or when the origin of the problem seems clearly linked to a specific update such as KB5074109, Both NVIDIA and other experts have suggested uninstalling that specific patch.This can be done from Settings → Windows Update → Update history, using the uninstall option at the bottom of the list. It's an effective solution for many, but it has the drawback of leaving the system without the latest security patches until Microsoft releases a permanent fix.
For those who rely on a PC for work or online competition, The general recommendation is to be cautious with optional upgrades. (known as previews or preliminary builds), especially if they affect sensitive components such as the network stack, the graphics subsystem, or low-level security features. Often, the strangest bugs appear first in these versions before filtering out—or being fixed—in stable updates.
Windows 11 reputation, AI in development, and player trust
This whole chain of bugs has once again put the reputation of Windows 11 in the spotlight.This is especially true among PC gamers who value stability and consistent performance above all else. It's not the first string of outages to affect the system, but it is one of the most talked-about due to the combination of graphical glitches, crashes, and problems with critical services.
In some circles, it has even begun to be debated whether the massive use of artificial intelligence tools in software development within Microsoft This could be affecting the quality of updates. The company has acknowledged using AI to write and review parts of its code, which raises reasonable questions about how these changes are integrated into traditional testing cycles. There is no evidence that these specific bugs are directly related to AI-generated code, but the discussion is ongoing.
The truth is that, since the arrival of version 24H2 and its subsequent revisions, Problems related to gaming have become a rather inconvenient constant.One patch breaks something in DirectX performance, another clashes with G-Sync, yet another causes multi-monitor instability… and so on. Ultimately, the feeling conveyed by many testimonials is that gamers feel as if their PCs are a permanent testing ground.
By contrast, NVIDIA's attitude in this episode has been relatively well received by the communityThe company has participated in forums, acknowledged the problems, and continues to investigate even though everything points to the origin being operating system changes. In an ecosystem where manufacturers often simply pass the buck, these kinds of public responses are appreciated, although they don't replace a definitive technical solution.
Ultimately, Gamers' confidence in Windows 11 doesn't depend solely on achieving the maximum possible FPS.It's not about knowing that installing a routine update won't turn the system into a rollercoaster. The fact that a simple patch can transform a stable machine into a source of crashes, graphical glitches, and connection drops is something that undermines that confidence in the long run.
Everything that has happened regarding the graphical glitches, kernel errors, problems with WPA3, and conflicting patches like KB5074109 paints a picture in which Windows 11 remains a powerful platform, but with a fragile balance between innovation, security, and stability.For users, especially those who play on PC, the key right now is to stay informed, apply critical updates wisely, and keep in mind that sometimes waiting a few days before installing the latest patch can save a lot of headaches.
