The Windows 11 February 2026 updates They have arrived with a double edge for European users: on the one hand, they bring new features designed to improve daily life; on the other, they have uncovered a cascade of errors that are causing more than one headache, especially after the latest round of security patches.
During these weeks, The Windows 11 user community is reporting a wide variety of issues.These issues range from incomplete installations to connectivity, sound, and graphics problems. At the same time, Microsoft is trying to restore trust with patch KB5077241, which introduces nearly thirty changes focused on performance, reliability, and minor practical improvements for the desktop.
February cumulative update: errors that complicate daily life
The cumulative update of February 2026 for Windows 11, identified as KB5077181It was released to address critical security vulnerabilities and keep the system up-to-date through Windows Update. However, since its rollout, cases of instability have emerged which, while not affecting everyone, are impacting a growing number of users.
According to compilations from specialized media and official forums, The problems are concentrated in a group of error codes that appear during system installation or daily use. Among them, the following codes are frequently mentioned: 0x800F0991, 0x800F0983, 0x800F0922, 0x80073712 y 0x80096004which point to issues when applying the patch or to damaged system files.
One of the most annoying problems has to do with the installation itself: The update process does not complete correctlyeven after restarting the computer several times. In these cases, users have been forced to resort to a repair reinstallation through the Settings and Windows Update options to try to restore stability to the computer.
In addition, complaints have multiplied because network connectivity issues after restarting After installing the patch, some systems lose their Wi-Fi connection due to DHCP-related errors, preventing them from obtaining a valid IP address and consequently cutting off internet access. In addition, several users report problems with Bluetooth devices, such as wireless mice or headphones, which stop being recognized or appear as incompatible.
Another source of conflict lies in the teams focused on gaming and content creation: there are reports of Gaming laptop crashes, audio dropouts, and screen freezes a few seconds after logging in. Anomalous behavior is also described in some NVIDIA graphics cardswith errors in application rendering, visual distortions or loss of HDMI signal when connecting external monitors, as well as black screens after exiting sleep mode that force the computer to be restarted.
Microsoft's stance and temporary solutions for the failures
While complaints pile up on forums and social media, Microsoft maintains in its official documentation that it is not aware of widespread problems. with this cumulative update. In the "known issues" section of the patch, the company indicates that it has not identified any open issues directly related to KB5077181.
This version clashes with the experience of some users, who claim to have tried different solutions without much success. In practice, The most widespread recommendation among those affected is to uninstall the problematic patch. and temporarily pause Windows Update until a new, more polished update package arrives. This process is done from Settings > Windows Update > Update history > Uninstall updates.
For those who prefer to keep the installed update, It is suggested to check the status of the network, audio, and graphics drivers., Installing the latest versions from the manufacturer's website, as well as checking for possible conflicts with security software or monitoring tools that load at system startup.
In any case, it is worth remembering that The problems are not occurring on all devicesFor now, these issues seem to be limited to specific configurations, often associated with certain graphics cards, gaming laptops, or devices with a particular set of drivers. Even so, the situation has reignited the debate about the quality of the latest Windows 11 updates.
KB5077241: the patch that attempts to restore stability
Alongside the headaches caused by the cumulative update, Microsoft has released the patch KB5077241 for Windows 11 in its versions 24H2 and 25H2This update, which has begun as an optional download and preview, promises to improve the functionality, performance, and reliability of the system after a complicated series of errors in basic functions such as shutdown and startup.
According to technical documentation and specialized media, KB5077241 includes approximately 29 changes These range from internal security adjustments to minor visual tweaks. One of the most sensitive points addressed is the BitLocker failure which could lock the computer after entering the recovery key at startup, something that affected both home users and business environments.
They have also been introduced Improvements in startup reliability after sleep modeThis means the computer should restart faster and with fewer issues. Microsoft also notes optimizations to the lock screen, settings panel, and taskbar, with the aim of making the interface more responsive in daily use.
In the section on internal operations, Stability issues that some users had been experiencing for months have been fixed., including authentication-related issues in services such as Virtual Desktop or Windows 365. These fixes are primarily intended for professional and remote work environments, where session drops or connection errors are especially critical.
The update also brings changes to how windows are managed in the taskbar. If the user has chosen not to combine icons and runs out of spaceWindows will no longer send the entire group of applications to the overflow area; it will only move those that don't fit, making it easier to keep the most important windows visible and reducing the number of clicks needed in multi-monitor environments.
New features: speed test and user experience improvements
One of the most visible changes for the average user is the arrival of a network speed meter integrated into the taskbarNow it's possible to launch a connection test directly from the network icon, without needing to install additional applications or manually enter pages like Fast.com or similar.
By activating this option, Windows 11 opens the default browser and runs a speed test This function analyzes the Ethernet, Wi-Fi, or mobile data connection, as appropriate. In Spain and the rest of Europe, where fiber optic connections and routers with combined Wi-Fi are common, this feature can serve as a quick check when slow speeds or outages are suspected on the home network.
The update also introduces Improvements to camera management from the Settings applicationFrom the Settings > Bluetooth and devices > Cameras section, it is possible to adjust options such as virtual framing or certain parameters designed for video calls, something especially useful for those who work remotely or hold frequent meetings through platforms such as Teams or Zoom.
Regarding the search, Windows Search gains the ability to display the number of results per category It also allows you to preview some files simply by hovering the mouse over them, without having to open them. The File Explorer, meanwhile, expands compatibility with compression formats and allows you to extract non-ZIP compressed files directly from the command bar.
Another practical detail is that Minor visual improvements have been made to the taskbar and battery icon.which now attempts to represent the charging status more clearly. Although these are minor changes, they help to provide a slightly more polished experience, especially on laptops and convertibles.
Enhanced security: Sysmon, BitLocker and Secure Boot
Beyond the visible functions, KB5077241 comes with a significant block of improvements focused on security and monitoringThe major innovation in this area is the native integration of System Monitor (Sysmon), an advanced tool that until now was mainly used in professional environments and is now directly incorporated into Windows 11.
Sysmon allows to record system activity in detail and capture key eventsThis includes processes running in the background, network changes, and modifications to specific files. All this information is logged in the Windows Event Log, allowing security solutions to analyze it and detect suspicious behavior more accurately.
The tool arrives Disabled by default to avoid consuming unnecessary resourcesTherefore, advanced users and administrators will need to manually activate it if they want to take advantage of it. In European companies with strict compliance and audit requirements, this integration can fit well into system monitoring and incident response policies.
Meanwhile, Microsoft claims to have reinforced BitLocker's reliability and the unlocking process When a recovery key is used, it reduces the number of instances where the system might freeze during startup. This is a particularly critical point in corporate laptops, where disk encryption is mandatory and any failure could temporarily render data inaccessible.
The company also points out that Windows Secure Boot certificate is about to expire And that, looking ahead to the coming months, new certifications have been introduced to prevent disruptions on personal and business devices. This measure aims to ensure that the startup process remains reliable over time and that devices meet the secure boot requirements mandated by the system.
Compatibility, printing, and other minor changes
Another aspect that generated a lot of doubt was the future of older printers. After some initial confusion, Microsoft has clarified that it will not remove support for older printers in Windows 11.Despite reports suggesting the end of the V3 and V4 controllers, the company has corrected itself and claims that the roadmap update was inaccurate.
In practice, this means that, If a printer is currently working on Windows 11, it should continue to work without changes.without the user having to take any additional steps. This approach is particularly relevant in European offices and small businesses that are still using printers that are several years old and do not plan to replace them in the short term.
Additionally, KB5077241 improves the print queue management and performance when printing large volumesThe aim is to reduce jams and slowdowns when sending many documents in quick succession. These are subtle adjustments that often go unnoticed, but they can make a significant difference in office environments with high printer usage.
On a more cosmetic level, the update adds support for Emoji 16.0 standardincorporating new icons such as a face with dark circles under its eyes, a fingerprint, and a leafless tree, among others. Furthermore, Windows 11 now allows Use images in .webp format as desktop background natively, which opens the door to using funds downloaded from the web without needing to convert them.
Other more subtle changes include a redesigned widget panelwhich now displays on a full page instead of a simple floating window, as well as minor tweaks to the storage settings dialog boxes and the search process icon within the Task Manager.
How and when is the update distributed in Windows 11?
As for the deployment, KB5077241 is initially offered as an optional update For Windows 11 24H2 and 25H2 users. To install it manually, go to Settings > Windows Update and click on "Check for updates", enabling if necessary the option to receive updates as soon as they are available.
Microsoft is using two distinct launch phasesOn the one hand, a "gradual implementation" in which some functions are activated little by little through the feature enablement system; on the other hand, a "normal implementation" intended for all devices that meet the requirements, where the complete package arrives.
The company's plan involves All these improvements will eventually be integrated into the following month's mandatory security update.In other words, those who do not install the preview now will end up receiving most of the changes within a standard cumulative patch, which will be automatically downloaded through Windows Update.
To avoid surprises, it is recommended that Users should regularly review the update history and the list of known issues. on the Microsoft support website. If you notice any unusual behavior after installing the February patches, you can always uninstall the conflicting update or use system restore points if they are available.
With this set of February patches, Windows 11 It continues to progress with useful improvements, security adjustments, and occasional bugs. which are forcing a refinement of the experience. The combination of new features such as the integrated speed test, the arrival of Sysmon, and stability fixes coexists with issues affecting certain users, so it's best to approach updates calmly, evaluate their impact on each device, and decide whether to install them immediately or wait until the company has fully debugged the changes.
