Windows versions

Winsage
February 11, 2026
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.
Winsage
January 30, 2026
Windows 11 features a modern architecture with advanced schedulers and SSD support, but many users experience sluggishness, with delays in menus and dialog boxes. This perception of reduced responsiveness compared to Windows 10 has been linked to the use of XAML, which modernizes traditional desktop components but introduces performance issues due to added abstraction layers. Disabling animations does not resolve the delays, which are attributed to XAML's reliance on GPU acceleration for simple tasks, leading to inefficiencies. The cumulative effect of these micro-delays, measured in milliseconds, contributes to an overall feeling of sluggishness, regardless of high-end hardware. Microsoft's design choices prioritize visual consistency and modern UI technology, resulting in trade-offs in everyday responsiveness. The slower perception of Windows 11 compared to Windows 10 is rooted in these deliberate technical decisions.
Winsage
January 20, 2026
On January 19, 2026, Microsoft released unscheduled security and stability updates for Windows 11 in response to significant errors that emerged after routine updates, which affected system functionality. Users reported issues with shutting down, hibernation failures, and authentication challenges with Remote Desktop and other remote applications. Microsoft rolled out out-of-band updates KB5077744 and KB5077797 to address these problems, impacting Windows 11 version 25H2, Windows 10 version 22H2, and Windows Server 2025. The updates also fix issues related to improper shutdowns and unreliable hibernation in Windows 11 version 23H2 when the Secure Launch feature is enabled. Recent incidents are part of a pattern of update-related challenges across various Windows versions, leading to criticism of the quality assurance processes for Windows updates.
Winsage
January 19, 2026
Microsoft is enhancing its Windows Backup for Organizations by introducing a 'second chance' restore option for Windows 11 users, allowing them to recover Microsoft Store apps and personalized settings at the first sign-in. This feature aims to streamline transitions by preserving Start menu pins and installed Microsoft Store applications, minimizing disruptions during upgrades. Currently in private preview, it is set to officially launch in early 2026. Organizations can sign up for the private preview until February 13, 2026, but must be part of the Microsoft Management Customer Connection Program and have a signed non-disclosure agreement (NDA) to qualify.
Winsage
January 19, 2026
Microsoft released its first set of security updates for the Windows operating system and various products in January 2026, addressing over 110 vulnerabilities. The updates are available for all supported versions of Windows, with Windows 10 receiving fixes only through the Extended Security Updates (ESU) program. Windows 11 versions 24H2 and 25H2 are the main consumer releases benefiting from these updates. Approximately 112–114 security updates were released, with around 8 rated as Critical. At least one zero-day vulnerability is actively exploited. The updates include security fixes for Windows, Office, Edge, Azure, and server components. Windows 11 versions 23H2, 24H2, and 25H2, as well as Windows Server 2023 and 2025, have known issues. Windows 11 version 24H2 and 25H2 received security fixes for multiple vulnerabilities, while version 23H2 continues to receive support through enterprise servicing channels. Windows 10 updates are limited to ESU-enrolled systems, with general support ending in October 2025. Windows Server 2016, 2019, 2022, 2023, and 2025 received January security updates, addressing important vulnerabilities without disclosing any critical ones. Microsoft also released updates for Office products and SharePoint Server components. Known issues after the January updates include credential prompt failures and authentication issues in Azure Virtual Desktop and Windows 365, particularly affecting the new Windows App. Workarounds involve using the classic Remote Desktop client or the web-based RDP client. Additionally, devices with Secure Launch enabled may experience shutdown and sleep mode failures. Microsoft has provided out-of-band fixes for certain affected systems as of January 18, 2026. Users can manually install updates through the Windows Update feature, and it is recommended to create a full system backup before proceeding with updates.
Winsage
January 16, 2026
Jen Easterly has been appointed as the new Chief Executive Officer of the RSA Conference. She is a cybersecurity expert and former Director of the Cybersecurity and Infrastructure Security Agency (CISA). Palo Alto Networks has released security updates for a vulnerability (CVE-2026-0227) with a CVSS score of 7.7 affecting its GlobalProtect Gateway and Portal, which can cause a denial-of-service condition in PAN-OS software. The January 2026 security update from Microsoft has caused connection and authentication failures in Azure Virtual Desktop and Windows 365, affecting users across various Windows versions. Microsoft is working on a resolution. The chief constable of West Midlands Police acknowledged an error by Microsoft’s Copilot AI in generating a fictional intelligence report. Microsoft has not confirmed Copilot's involvement. Britain’s National Cyber Security Centre (NCSC) has collaborated with Five Eyes partners to provide guidance on securing industrial operational technology, highlighting risks associated with remotely monitored systems. Kyowon, a South Korean conglomerate, confirmed a ransomware attack on January 10 that may have compromised customer information, affecting approximately 5.5 million members. Researchers at Varonis have identified a new attack technique called "Reprompt" that allows data exfiltration from Microsoft Copilot via a malicious link, exploiting a Parameter 2 Prompt (P2P) injection technique. Central Maine Healthcare is notifying over 145,000 patients about a data breach that compromised personal, treatment, and health insurance information, discovered on June 1.
Winsage
January 15, 2026
The delay in booting up a Windows 11 laptop can be caused by multiple applications that automatically launch at startup, which can hinder system performance. Common applications that may launch include antivirus programs, Microsoft OneDrive, Slack, gaming applications, backup tools, and webcam software. Users can manage these startup applications through three methods: Task Manager, Settings, or File Explorer. In Task Manager, users can view and disable startup applications by right-clicking on entries in the Startup apps menu. The impact of each application on startup time is categorized as high, medium, low, none, or not measured. In the Settings app, users can navigate to Apps and then Startup to toggle off applications they do not want to launch automatically. File Explorer can also be used to manage startup applications by accessing the shell:appsfolder and shell:startup or shell:common startup commands to view and modify the applications set to launch at sign-in. Users are advised to disable applications they rarely use while keeping essential security software enabled. Third-party startup managers like Autoruns and Startup Delayer can provide additional insights into startup applications. Similar management methods apply to previous Windows versions.
Winsage
January 15, 2026
Microsoft's January security update, released on January 13, 2026, has caused connection and authentication failures for users of Azure Virtual Desktop and Windows 365, particularly affecting those using the Windows App. The update has resulted in credential prompt failures during Remote Desktop connections across all supported Windows versions, from Enterprise LTSC 2016 to Windows 11 25H2, as well as Windows Servers from 2019 to 2025. Microsoft is investigating the issue and plans to release an out-of-band update soon. Users have been advised to either uninstall the update or use the Remote Desktop Client or the Windows App web client as workarounds. Reports indicate persistent issues, including an "Unable to Authenticate" error when attempting to connect via the Windows App. Microsoft has also made a Known Issue Rollback available to address these credential problems.
Winsage
January 15, 2026
Microsoft and the U.S. government have issued a warning about a vulnerability in Windows, designated CVE-2026-20805, which is currently being exploited. This flaw allows an authorized attacker to leak a memory address from a remote ALPC port, potentially leading to arbitrary code execution. It has a medium severity rating of 5.5 on the CVSS scale. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added this vulnerability to its Known Exploited Vulnerabilities catalog and requires federal agencies to implement a patch by February 3. Additionally, two other vulnerabilities were acknowledged: CVE-2026-21265, a secure boot certificate expiration bypass with a CVSS rating of 6.4, and CVE-2023-31096, an elevation of privilege flaw affecting third-party Agere Modem drivers, rated at 7.8. Two more vulnerabilities, CVE-2026-20952 (CVSS 7.7) and CVE-2026-20953 (CVSS 7.4), are use-after-free flaws in Office that could allow unauthorized code execution.
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