Patch Tuesday updates Archives

Winsage

August 31, 2026

Microsoft’s latest Windows update breaks cursors, wallpaper, and more – what to do if you’re affected

Windows 11 users who installed the September preview update (KB5120998) are experiencing a bug that alters or erases personalized mouse cursor settings, resulting in cursors that may be too large, too small, or invisible. Microsoft has acknowledged this issue, describing it as causing "appearance regressions and intermittent animation changes." High-DPI cursors have been replaced with larger, white cursors, and attempts to revert to previous settings have failed. Additionally, users have reported issues with wallpapers reverting to a black screen and blurry fonts, although Microsoft has not formally acknowledged the font issue. Users can uninstall the update by navigating to Settings, selecting Windows Update, clicking on Update History, and finding the option to uninstall the update labeled 2026-08 Preview Update (KB5120998). Microsoft is investigating the cursor problem and plans to provide updates by September 8.

Winsage

August 27, 2026

Microsoft is blocking the problem to fix Windows 11 KB5121003 restarts, crashes

Microsoft addressed printing issues and gaming-related complications linked to recent .NET Patch Tuesday updates. The problems were associated with RGB applications and the inpoutx64 system driver, which caused compatibility issues when certain games were launched. Microsoft has implemented a block to prevent the inpoutx64 driver from loading on affected devices, specifically targeting systems with the driver enabled and ARC Raiders installed. Users will receive a notification after the block is implemented, and the game should launch without further issues. The block is also being extended to systems running MARVEL Tōkon: Fighting Souls, while the issue with THE FINALS has been resolved. The resolution is being distributed automatically, and users need to restart their devices after the fix is applied. For enterprise-managed devices, IT administrators must manually apply the fix. Microsoft provided a temporary workaround by suggesting users disable the inpoutx64 driver through the Windows Registry. Users can change the Start value in the Registry Editor to 4 to disable the driver and may need to restart their devices for changes to take effect. Users are advised to back up the Registry before making modifications, and they can restore the driver by reverting the Start value back to its original setting.

Winsage

August 20, 2026

Microsoft Surface and other Windows on Arm PCs can’t use Outlook or Teams right now

A recent update to Windows 11, specifically KB5121003 released during Patch Tuesday, has caused functionality issues with Microsoft Teams and Outlook for users on Windows on Arm PCs. Users have reported these problems on Microsoft Learn, leading to a community discussion about the challenges and potential solutions.

Winsage

August 16, 2026

Microsoft releases new Defender update for Windows 11, 10, Server ISO installations

Microsoft released its August 2026 Patch Tuesday updates, including the latest Defender package for ISO installations. The updates are aimed at combating malware threats and are issued approximately every three months for Windows installation images (WIM and VHD) and ISOs. The latest Windows 11 update is available through the Media Creation Tool (MCT). The security definitions were delivered through security intelligence update version 1.455.50.0, applicable to various platforms including Windows 11, Windows 10 ESU, Windows Server 2022, and others. The update includes enhancements to the anti-malware client, engine, and signature versions, with platform version 4.18.26070.9, engine version 1.1.26070.7, and security intelligence version 1.455.50.0. The previous security intelligence update was version 1.447.236.0, which introduced detections for various malware types. The most recent intelligence update is version 1.457.181.0.

Winsage

August 14, 2026

Microsoft warns users to install Windows 11’s latest update within 3 days, 400+ security bugs fixed

Windows 11's August 2026 Patch Tuesday update has been released, addressing 421 security vulnerabilities, including 400 specific to the Patch Tuesday release. The update rectifies at least 37 remote code execution bugs and five elevation-of-privilege vulnerabilities. Microsoft advises users to implement the update within three days for security. The update includes fixes for other Microsoft products like Entra, Office, and Teams. Users should verify their Windows 11 build number, with recommended versions being 26200.9168 for 25H2 and 26100.9168 for 24H2. The update is identified as KB5121003 and may require up to two reboots to apply fully. Key areas of focus in the update include the kernel, Remote Desktop, DNS, DHCP, SMB, and Windows Defender Firewall. Microsoft emphasizes the importance of timely updates and recommends limiting the deferral period for quality updates to less than three days.

Winsage

August 12, 2026

Microsoft fixes 421 bugs and a Windows zero-day in August Patch Tuesday

Microsoft's August Patch Tuesday update addressed 421 vulnerabilities across various products, including multiple versions of Windows (11 25H2/24H2, 11 23H2, and 10). A critical zero-day flaw, the "Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability," allows attackers with lower-level access to gain system privileges without user interaction. Additionally, the update addresses two other zero-day flaws, including the "Windows User Profile Service Elevation of Privilege Vulnerability," which has not yet been exploited but was publicly disclosed. The update is mandatory and should automatically install on supported PCs, with users encouraged to verify its application. The update also includes minor improvements to Windows features, such as enhancements to File Explorer, Windows Hello, Voice Access, and touchpad controls.

Winsage

August 11, 2026

Windows 11 KB5121003 & KB5120240 cumulative updates released

Microsoft has released cumulative updates KB512103 and KB5120240 for Windows 11 versions 25H2, 24H2, and 23H2, addressing security vulnerabilities, bugs, and introducing new features. These updates include the August 2026 Patch Tuesday security patches, which address 400 vulnerabilities. Users can install the updates via Start > Settings > Windows Update or manually from the Microsoft Update Catalog. This is the eighth 'Patch Tuesday' release of 2026, with no exclusive changes for either version. Key enhancements in the August 2026 update include: - File Explorer: Improved file size display, middle-click functionality for folders, resolution of loading issues, and enhanced clarity of file thumbnails. - Windows Search: Better handling of typos in app search and improved relevance of settings in search results. - Voice Access: Introduction of Voice Isolation and Korean language support, along with reliability improvements. - Widgets: Taskbar notification badges now reflect the Windows accent color, and the Lock screen Widgets experience has been simplified. - Start Menu: Improved reliability of view preferences and enhanced keyboard navigation. - Windows Hello: Enhanced Sign-in Security now supports peripheral fingerprint sensors. - Power and Battery: Improved reliability of power settings and restored threshold setting for energy saver activation. - Accessibility: Enhanced Magnifier experience on touch devices. Microsoft has not reported any new issues related to this month's updates.

Winsage

August 11, 2026

Microsoft Releases August 2026 Patch Tuesday Updates

Microsoft has released the August 2026 Patch Tuesday updates for all supported versions of Windows 11, including the KB5121000 update for version 26H1, which introduces a new Screen tint accessibility option, a subdued Widgets experience, and the ability to pause Windows Updates for up to 35 days. The KB5121003 update for versions 25H2 and 24H2 includes new gesture controls for precision touchpads, enhanced Windows Hello security for peripheral fingerprint sensors, taskbar notification badges reflecting the Windows accent color, improved app search functionality, upgraded Voice Access with Voice Isolation, better Windows Update settings, and the ability to set a threshold for energy saver activation. Additionally, Microsoft has addressed 398 Common Vulnerabilities and Exposures (CVEs) this month, with 62 classified as ‘Critical’ and one ‘Important’ flaw currently being exploited by attackers.

Winsage

July 30, 2026

Windows 11 KB5101684 update released with 42 changes and fixes

Microsoft has released the KB5101684 preview cumulative update for Windows 11 versions 24H2 and 25H2, which includes 42 bug fixes and various enhancements. This update is part of the optional non-security preview update schedule and does not include security updates. Users can install it via Settings > Windows Update > Check for Updates, with an option to choose installation. The update elevates Windows 11 24H2 to build 26100.8973 and Windows 11 25H2 to build 26200.8973. It addresses issues such as false invalid credential errors in File History backups, noncompliance in newly enrolled devices, and incorrect file markings on DFS mapped drives. New features include enhanced navigation in File Explorer, more accurate file size indicators, improved search results for app names, and new precision touchpad controls. Voice Isolation support for Voice Access is introduced, along with expanded Windows Hello Enhanced Sign-in Security for external fingerprint readers. Immediate features include enhancements to Secure Boot, app stability improvements, and fixes for MDM compliance issues. Additional features rolling out post-update involve better file size displays in File Explorer, enhanced app search, Voice Isolation for voice access, taskbar notification badge updates, new touchpad gesture controls, and reliability improvements for the Start menu and Windows sign-in screens. Microsoft reports no known issues with this update.

Winsage

July 27, 2026

New Certighost PoC exploit lets attackers hijack Windows domains

A proof-of-concept exploit for the "Certighost" vulnerability (CVE-2026-54121) has been released, affecting Windows Active Directory Certificate Services. This vulnerability allows authenticated attackers to compromise a Windows domain by manipulating machine account attributes to obtain certificates from AD CS, enabling them to authenticate as that machine or even as a domain controller. The flaw was reported to Microsoft on May 14, 2026, and addressed in the July 2026 Patch Tuesday updates. The vulnerability exploits a fallback mechanism in AD CS during certificate enrollment requests, allowing attackers to direct the Certification Authority to their controlled systems. The researchers demonstrated that a low-privileged user could create a machine account and use it to impersonate a domain controller, leading to potential domain compromise. Microsoft has added validation to the chase process in the July updates to prevent this exploitation. For those unable to install the updates, a temporary workaround involves disabling the chase fallback, though this has not been extensively tested.