cumulative updates Archives

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August 25, 2026

Microsoft: August updates break printing, PDF export in WPF apps

Microsoft has acknowledged a significant issue with the .NET Framework updates from August 2026, causing disruptions in printing and PDF export functionalities in certain applications, particularly those using the Windows Presentation Foundation (WPF) UI framework. After installing the update, some WPF applications may encounter a System.IO.FileFormatException when printing or generating PDF/XPS content with specific fonts, including Calibri. This issue affects various platforms, including Windows 10, Windows 11, and Windows Server editions from 2012 to 2025. Microsoft has provided a temporary workaround involving the Switch.MS.Internal.TtfDelta.DisableCmapAndSbitOverflowProtection AppContext switch, but cautions that it may expose systems to vulnerabilities. This situation is reminiscent of a similar incident in February 2021, where WPF applications and Visual Studio experienced crashes after Windows 10 cumulative updates. Additionally, on the same day, Microsoft offered a workaround for another issue caused by Windows 11 updates that led to crashes in certain games.

Winsage

August 24, 2026

Microsoft shares workaround after Windows KB5120708, KB5120705, KB5120710 break printing

Microsoft released its monthly Patch Tuesday security updates, which included dynamic updates and new .NET Framework versions. Users of Windows 11, Windows 10, and Windows Server are experiencing printing issues after installing the August 2026 .NET Framework cumulative updates, particularly with Windows Presentation Foundation (WPF) applications that fail during printing tasks or when generating PDF or XPS documents. The problems are linked to specific fonts, notably Calibri, and may result in a System.IO.FileFormatException. Microsoft has provided a temporary workaround involving an AppContext switch, but enabling this switch disables certain security protections from the August 2026 update, potentially exposing applications to vulnerabilities. No permanent fix or timeline for one has been provided.

Winsage

August 15, 2026

Don’t panic if Windows 11 reboots multiple times for security updates, here’s why it’s happening

Windows PCs are experiencing multiple reboots during the installation of monthly cumulative updates, particularly due to updates related to Secure Boot certificates and accompanying firmware updates. Microsoft is rolling out the Secure Boot certificate update to millions of Windows 11 and Windows 10 devices, with users who haven't received the certificates expected to do so soon, unless firmware limitations arise. Microsoft has acknowledged that multiple reboots may occur during this rollout. The August 2026 Patch Tuesday update addressed around 400 security vulnerabilities and included a Secure Boot certificate update for a wider range of devices. It is advised not to delay updates beyond three days to avoid potential AI-driven security threats. The August 2026 Update also activates the Low Latency Profile for app launches and improves file size displays in File Explorer. Reports indicate that devices lacking the Secure Boot 2023 certificate have successfully received it following this update, and Microsoft will continue deploying certificates via Windows updates in the coming months.

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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 10, 2026

Windows 11 26H2 Ships as an Enablement Package With Movable Taskbar, Local Search, and Default Cloud Recovery

Windows 11 version 26H2 is expected to launch around October 2026 as a small enablement package using the same Germanium platform as versions 24H2 and 25H2. Key enhancements include a movable taskbar, expanded Start menu controls, deeper Copilot integration, and new default cloud recovery settings for managed PCs. Users on versions 24H2 or 25H2 will experience a quick upgrade process requiring only one reboot. The taskbar will allow repositioning and smaller icon sizes, and the Start menu will have new configuration options and privacy settings. Search functionality will prioritize local content, with an option to disable web results. The update will enhance cloud-assisted setup and recovery for eligible Microsoft Entra devices, enabling automatic backup of settings and app lists. Copilot will be integrated into Search and File Explorer, and Windows Security will improve Administrator Protection. The support timeline for 26H2 will reset, offering 24 months for Home and Pro editions and 36 months for Enterprise and Education editions. Hardware requirements remain unchanged, and Arm devices on Windows 11 26H1 will not receive the 26H2 update.

Winsage

August 8, 2026

Windows 11 26H2 is a small update with big quality-of-life improvements, expected around October 2026

Windows 11 will undergo a significant transformation with the upcoming annual update, version 26H2, which introduces enhancements to the interface, search functionality, backup processes, and AI integration. The update will allow users to reposition the taskbar to any edge of the screen and adopt a smaller layout with reduced icon sizes. The Start menu will have new configuration options and a privacy feature for hiding account details during screen sharing. Search functionality will prioritize local content over web results, with an option to disable web results entirely. Cloud-assisted setup and recovery will become a default setting for eligible Microsoft Entra devices, automatically saving configuration settings and app lists. Copilot will be more integrated into daily operations, including a dockable side panel in File Explorer. Updates will also be made to traditional system tools, including a modernized Run dialog and enhanced security for administrator-level operations. The support timeline for Windows 11 installations will reset, with Home and Pro editions receiving 24 months of support and Enterprise and Education editions receiving 36 months. The hardware requirements remain unchanged, and the rollout of 26H2 is anticipated in the latter half of 2026, likely around October.

Winsage

August 5, 2026

Here’s when Windows 11 26H2 will roll out, and what’s actually new on existing PCs

Windows 11 26H2 is expected to be released in October 2026 as an enablement package, primarily serving as a servicing update to enhance stability for enterprise users rather than introducing significant new features. The support for Windows 11 24H2 will end on October 13, 2026, while 25H2 will be supported until October 12, 2027. Windows 11 26H2 will integrate into the existing servicing model of 24H2 and 25H2, allowing users to upgrade quickly with a small update size of 174KB. The system requirements for 26H2 will remain the same as its predecessors. New features include the rebranding of Windows Backup to "Windows settings backup and restore," which will automatically back up user settings and select personal files to the cloud by default. Another feature, Point-in-time restore, will be enabled by default for 26H2 users, allowing the creation of system restore points. This update aims to provide a consistent user experience and enhance business continuity without being a full operating system upgrade.

Winsage

July 20, 2026

Windows 11 Version 26H2 Ships as an Enablement Package With No New Features Over 25H2

Microsoft is set to release Windows 11 version 26H2, an enablement package based on version 25H2, without introducing new features at launch. The update will require only a single restart for devices on versions 25H2 or 24H2, while users on older versions, such as 23H2 or Windows 10, will need a full feature update. Both versions share identical features and are built on the same platform, with version 26H2 using build numbers in the 26300 series. The update process will vary depending on the current version, and version 26H2 will not change hardware requirements. Microsoft plans a gradual rollout of the update, initially as an optional install. Version 26H2 aims to extend support, adding approximately a year to the support timeline, with version 25H2 support continuing until October 2027. Users should verify their current version and back up important files before upgrading.

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July 20, 2026

July 2026 Patch Tuesday: KB5101650 Windows 11 Update

On July 14, 2026, Microsoft released cumulative update KB5101650 for Windows 11 versions 25H2 and 24H2, addressing OS Builds 26200.8875 and 26100.8875. This update includes essential security fixes, updates to Secure Boot certificates, and enhanced Remote Desktop Protocol (RDP) defenses against phishing attacks. It consolidates July 2026's security content, addressing known vulnerabilities and introducing functional improvements. The update is critical for minimizing exposure to identified threats and is prioritized for systems managing remote access or nearing certificate expiration. The update enhances Remote Desktop security by supporting SHA-2 certificate thumbprints while retaining SHA-1 for legacy compatibility. It includes new Group Policy options to mitigate phishing risks associated with malicious .rdp files. The curl upgrade to version 8.21.0 incorporates security patches for command-line tools in Windows environments. Secure Boot certificates are automatically updated through Windows updates, ensuring boot security across various hardware. KB5101650 installs primarily through the Windows Update interface, requiring a restart to activate changes. Enterprise environments can use the Microsoft Update Catalog for manual distribution. A temporary restriction affects certain Dell devices with Intel Innovation Platform Framework drivers, which Microsoft plans to address in a future update. The cumulative update resolves a total of 622 Microsoft CVEs, including 416 affecting Windows components. Users are advised to verify and install the update promptly to secure the full suite of improvements.

Winsage

July 14, 2026

Microsoft rolls out massive Windows 11 security update with 416 fixes

Microsoft released its July 2026 Patch Tuesday cumulative updates for Windows 11, addressing numerous security vulnerabilities and enhancing Secure Boot functionalities. The updates include: - KB5101650 for Windows 11 25H2 and 24H2, updating systems to builds 26200.8875 and 26100.8875. - KB5101649 for Windows 11 26H1, updating devices to build 28000.2525. The release addresses a total of 622 Microsoft Common Vulnerabilities and Exposures (CVEs), including: - 416 vulnerabilities in Windows. - Fixes for Microsoft Office, Edge, Exchange Server, SharePoint Server, SQL Server, Defender, and Azure services. Key vulnerabilities fixed include: - CVE-2026-50661: A BitLocker Security Feature Bypass vulnerability. - CVE-2026-56155: An AD FS Elevation of Privilege vulnerability that has been exploited. - CVE-2026-56164: A SharePoint Server Elevation of Privilege vulnerability. The updates also introduce new Secure Boot certificates, rectify issues from previous patches affecting third-party applications, and incorporate curl 8.21.0 for security improvements. Users are advised to back up data before installation, which requires a system reboot.