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Patch Tuesday

Patch Tuesday, February 2026 Edition
Winsage
February 11, 2026

Patch Tuesday, February 2026 Edition

Microsoft has released updates addressing over 50 vulnerabilities in its Windows operating systems and applications, including six critical zero-day vulnerabilities. 1. CVE-2026-21510: A security feature bypass in Windows Shell that allows execution of malicious content via a single click on a link, affecting all supported Windows versions. 2. CVE-2026-21513: Targets MSHTML, the web browser engine in Windows. 3. CVE-2026-21514: A security feature bypass in Microsoft Word. 4. CVE-2026-21533: Allows local attackers to gain SYSTEM level access in Windows Remote Desktop Services. 5. CVE-2026-21519: An elevation of privilege flaw in the Desktop Window Manager (DWM). 6. CVE-2026-21525: A potential denial-of-service threat in the Windows Remote Access Connection Manager. Additionally, the updates include fixes for remote code execution vulnerabilities affecting GitHub Copilot and various IDEs, specifically CVE-2026-21516, CVE-2026-21523, and CVE-2026-21256, which arise from a command injection flaw. Security experts emphasize the importance of safeguarding developers due to their access to sensitive data and recommend applying least-privilege principles.
Microsoft fixes six actively exploited flaws in latest Windows 11 update
Winsage
February 11, 2026

Microsoft fixes six actively exploited flaws in latest Windows 11 update

Microsoft's February 2026 Patch Tuesday addressed 59 vulnerabilities in Windows 11, with six confirmed as actively exploited. The most critical vulnerability is CVE-2026-21510, a Windows Shell security feature bypass with a CVSS rating of 8.8, allowing attackers to evade warnings by tricking users into opening malicious files. Another significant vulnerability, CVE-2026-21513, also rated at 8.8, affects MSHTML and allows remote attackers to bypass execution prompts through malicious code in HTML or shortcut files. CVE-2026-21514 impacts Microsoft Word and enables adversaries to disable OLE mitigations, posing risks through document-based attacks. Two local privilege escalation vulnerabilities are CVE-2026-21519 in Desktop Window Manager and CVE-2026-21533 in Windows Remote Desktop Services, with CVSS scores of 7.8. CVE-2026-21525 is a denial-of-service vulnerability in Remote Access Connection Manager. The update includes 53 additional vulnerabilities across various Microsoft products and services, with CVE-2026-21531 in Azure SDK rated at 9.8 and CVE-2026-20841 affecting Windows Notepad rated at 8.8. The cumulative update for Windows 11 (KB5077181) also includes enhancements and resolves WPA3 Wi-Fi connectivity issues. Microsoft reminded users of the June 2026 expiration of Secure Boot certificates, which requires timely updates to ensure secure booting. Users can install the updates via Windows Update.
Microsoft confirms that a stack of bad Windows updates is causing boot issues
Winsage
February 1, 2026

Microsoft confirms that a stack of bad Windows updates is causing boot issues

Windows 11 is facing significant issues following the January Patch Tuesday, particularly with boot failures on commercial devices. These problems are linked to both the January update and a flawed December update, leading to a "UNMOUNTABLEBOOTVOLUME" Blue Screen of Death (BSOD) error. Microsoft has indicated that devices that did not successfully install the December security update are left in an improper state, which can prevent booting when subsequent updates are attempted. While Microsoft is working on a partial solution to prevent further installations that could cause boot failures, this fix will not resolve issues for devices already affected. The company is investigating the causes of these update failures and their consequences.
Windows 11 has 1 billion users
Winsage
February 1, 2026

Windows 11 has 1 billion users

Microsoft CEO Satya Nadella announced that Windows 11 has surpassed 1 billion monthly active users, following the end of support for Windows 10. Despite this milestone, there is significant customer dissatisfaction. Windows chief Pavan Davuluri acknowledged the need for improvements in system performance, reliability, and overall user experience. Recent updates have been problematic, with glitches reported during the first Patch Tuesday update of 2026. The integration of AI features has left some users feeling overwhelmed, while the constant upsell prompts for services like Xbox Game Pass and Microsoft 365 have been criticized as bloatware. Users have also expressed frustration over forced migrations to OneDrive, where files have been deleted without consent. Additionally, there is a notable disparity in support for home users compared to corporate users, raising concerns about Microsoft's commitment to enhancing the consumer experience.
Sat Nad declares Windows 11 has a billion users – just don't bother asking for details
Winsage
January 29, 2026

Sat Nad declares Windows 11 has a billion users – just don’t bother asking for details

Microsoft CEO Satya Nadella announced that Windows 11 has reached one billion users. This figure represents a 45 percent year-on-year increase and is achieved faster than Windows 10. The transition to Windows 11 has been influenced by the end of support for various Windows 10 versions in October, prompting users to upgrade. However, stringent hardware compatibility requirements have limited upgrades for many Windows 10 devices. Microsoft previously missed a target of one billion Windows 10 devices by 2018 due to issues with Windows Phone. The expiration of support for Windows 10 has led many users to upgrade to Windows 11 or enroll in the Extended Security Updates program. Industry analysts suggest that many enterprises are budgeting for hardware replacements or ESU costs ahead of the October 2025 deadline for free Windows 10 updates.
Windows 11's growth has officially hit a brick wall — and users appear to be fleeing back to Windows 10
Winsage
January 27, 2026

Windows 11’s growth has officially hit a brick wall — and users appear to be fleeing back to Windows 10

Windows 11's global desktop market share declined from 55.18% in October 2025 to 50.73% by December 2025. The operating system faced technical issues, including a problematic Patch Tuesday that affected users' ability to run applications and shut down devices. Microsoft's decision to allow the FBI access to BitLocker encryption keys has eroded user trust. Additionally, increasing advertisements and a push towards AI integration have led to dissatisfaction among users. Complaints about Windows 11 have spread from niche forums to mainstream channels, with critics noting a disconnect between new hardware capabilities and the operating system's performance.
Microsoft Keeps Adding Windows Features, But Trust Keeps Eroding
Winsage
January 27, 2026

Microsoft Keeps Adding Windows Features, But Trust Keeps Eroding

Windows 11 has received mixed reviews, with users expressing dissatisfaction primarily due to unexpected changes, mandatory decisions, and problematic updates rather than performance issues. Microsoft frequently introduces new features, but these are often met with resistance due to a lack of user consent and clear communication. Recent Patch Tuesday updates have led to complications, diminishing user trust. Users desire clarity about changes, optional features, and centralized privacy controls. They seek a clearer relationship with Microsoft, which includes no advertisements in core interfaces, no mandatory features without opt-in, transparent communication, and meaningful feedback mechanisms. The bond between Microsoft and its users is strained, requiring clarity and consistency to rebuild trust.
Microsoft issues SECOND emergency out of band update for Windows 11 to address disastrous Patch Tuesday bugs
Winsage
January 26, 2026

Microsoft issues SECOND emergency out of band update for Windows 11 to address disastrous Patch Tuesday bugs

Microsoft's January 2026 Patch Tuesday updates for Windows 11 have caused significant user frustration, leading to two emergency out-of-band updates within a week to address critical issues. The latest emergency update, KB5078127, was released to fix problems that made applications like Outlook, OneDrive, and Dropbox inoperable after the January 13 updates. Initially, users were advised to uninstall the updates as a temporary fix. The first emergency update on January 17 aimed to resolve shutdown and hibernation failures for version 23H2 and issues with Remote Desktop sign-in, but it inadvertently caused further disruptions to essential applications. The Windows release health dashboard remains a key resource for users seeking updates on ongoing issues.
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