application control Archives

Winsage

April 13, 2026

Microsoft tightens Windows 11 driver security rules

Microsoft will enforce a new mandate requiring all hardware drivers to comply with the Windows Hardware Compatibility Program (WHCP) standards starting April 1, 2026. This change will eliminate the "cross-signing" system that allowed older drivers with expired certificates to remain trusted. The enforcement of WHCP certification will apply to various versions of Windows 11 and Windows Server 2025. Users may face blocks when installing older drivers on new systems, but existing installations will not be immediately disrupted. Microsoft plans to introduce an "allow list" for vetted legacy drivers to ensure essential equipment remains operational during the transition. The initial rollout will occur in "evaluation mode," allowing Microsoft to monitor driver behavior without blocking software. For corporate environments, Microsoft offers "Application Control for Business" to allow specific software while maintaining security measures.

Winsage

March 31, 2026

Microsoft’s April 2026 Windows Update Ends Trust for Cross-Signed Kernel Drivers

Microsoft will eliminate default trust for kernel drivers signed through the outdated cross-signed root program with the April 2026 Windows update. All new kernel drivers must be certified via the Windows Hardware Compatibility Program (WHCP). This change will affect Windows 11 builds 24H2, 25H2, and 26H1, as well as Windows Server 2025, with future versions following the same standards. The update will begin in evaluation mode, monitoring driver loads for compliance before transitioning to enforcement mode. An allow list of reputable drivers will be maintained for legacy hardware, and enterprises can use Application Control for Business policies to authorize specific drivers. Users with older hardware may face compatibility issues if their drivers are not WHCP-certified.

Winsage

March 28, 2026

Update Windows 11 will block Denuvo hacking via Hypervisor

Microsoft has confirmed a major kernel security update for Windows 11, revoking trust in older drivers signed through an outdated cross-certification program. The update will ensure that Windows 11 accepts only software that has passed the Windows Hardware Compatibility Program's testing standards. This change aims to counter piracy attempts, particularly against a hacker known as DenuvOwOA, who bypassed Denuvo's anti-piracy protection by manipulating the embedded hypervisor and loading unsigned or vulnerable drivers. The new security policy will block the execution of such code, making existing hacking methods obsolete. The rollout will begin in compatibility assessment mode for Windows 11 and Windows Server & Hosting, with a hard block activated only if no stability issues are detected. Corporate clients can manually add certificates through the Application Control for business tool, while gamers will find it increasingly difficult to run hacked games relying on a modified hypervisor.

Winsage

March 27, 2026

Microsoft tells crusty old kernel drivers to get with the Windows Hardware Compatibility Program

Microsoft is enhancing the security of the Windows kernel by eliminating trust for kernel drivers not certified through the Windows Hardware Compatibility Program (WHCP) starting with the April 2026 Windows Update. This change specifically targets kernel drivers signed by the now-obsolete cross-signed root program, which has been associated with security vulnerabilities. The new policy will initially be introduced in an "evaluation mode" to monitor and audit driver loads for potential compatibility issues. Custom kernel drivers can still be used under the Application Control for Business policy, but must be signed by an authority within the device's Secure Boot Platform Key or Key Exchange Key variables. The changes will impact Windows 11 versions 24H2, 25H2, 26H1, and Windows Server 2025.

Tech Optimizer

March 16, 2026

What Is a Crypto Miner Virus?

A crypto miner virus, or cryptojacking malware, secretly uses a device’s CPU or GPU to mine cryptocurrency for an attacker, leading to increased electricity costs and potential hardware damage for the victim. It typically infects devices through phishing emails, pirated software, compromised websites, and malicious browser extensions. Monero is the preferred cryptocurrency for mining due to its efficiency on standard CPUs and privacy features. Signs of infection include overheating, high CPU usage, and increased electricity bills. Detection involves monitoring system performance and running antivirus scans. Prevention includes using antivirus software, keeping systems updated, and avoiding pirated software. Notable incidents include attacks on a European water utility and the Los Angeles Times website.

Winsage

March 14, 2026

Announcing Windows 11 Insider Preview Build 26220.8062 (Beta Channel)

Windows 11 Insider Preview Build 26220.8062 (KB 5079458) has been released to the Beta Channel, introducing various changes and improvements. 1. Policy-Based Removal of Preinstalled Microsoft Apps: IT administrators can now use a dynamic app removal list to remove MSIX/APPX apps by adding their package family names through Group Policy. The dynamic list is not yet available in Intune CSP. 2. Windows Setup Experience: Users can select a custom name for their user folder during the Windows setup process, which must adhere to standard naming conventions. 3. Windows Driver Policy Update: A new policy removes default trust for cross-signed drivers, allowing third-party drivers from the Windows Hardware Compatibility Program (WHCP) by default. The feature will initially operate in audit mode for at least 100 hours. 4. Point-in-Time Restore Updates: Local administrators will see a settings dialog to view or modify default restore settings, including a list of available restore points. Updated messaging has been added to the restore experience. 5. Drag Tray Rebranding: The Drag Tray has been rebranded as Drop Tray, with settings relocated to System > Multitasking. 6. Pen Settings: Refinements have been made to the Pen settings page, including an option for the pen tail button to launch the same app as the Copilot key. 7. File Explorer and Other Enhancements: Improvements have been made to the reliability of setting the preferred display language, and unexpected errors from the sfc/scannow command have been removed. Updates are gradually rolled out to Insiders who opt in via Settings > Windows Update, and features may evolve or be removed based on feedback.

Winsage

March 13, 2026

Announcing Windows 11 Insider Preview Build 26300.8068 (Dev Channel)

Windows 11 Insider Preview Build 26300.8068 (KB 5079464) has been released to the Dev Channel. Key changes include: - Enhanced policy for removing preinstalled Microsoft Store apps for Windows ENT/EDU, allowing IT administrators to use a dynamic app removal list via Group Policy. - Users can now select a custom name for their user folder during the Windows setup process. - A new policy removes default trust for cross-signed drivers, allowing third-party drivers from the Windows Hardware Compatibility Program (WHCP) by default, initially operating in audit mode. - Point-in-time restore now includes a settings dialog for local administrators and displays available restore points. - Microsoft 365 Family subscribers can upgrade their plan directly from the Accounts page in Settings. - The Drag Tray feature has been rebranded to Drop Tray, with settings relocated. - Updates to Pen settings include a new option for the pen tail button. - Enhanced reliability for preferred display language settings and removal of an unexpected error from sfc/scannow. Updates are gradually rolled out to users who opt in through the Settings menu under Windows Update.

Winsage

March 12, 2026

Windows 11 KB5079473 & KB5078883 cumulative updates released

Microsoft has released cumulative updates KB5079473 and KB5078883 for Windows 11 versions 25H2, 24H2, and 23H2 as part of the March 2026 Patch Tuesday. These updates address security vulnerabilities, fix bugs, and introduce new features. Users can install the updates via Start > Settings > Windows Update or manually from the Microsoft Update Catalog. The build numbers will change to 26200.8037 for 25H2, 26100.8037 for 24H2, and 22631.6783 for 23H2. Key enhancements include improved device targeting data for Secure Boot certificates, better reliability in File Explorer searches, and various new features such as a curated selection of emojis, a new backup and restore experience, automatic activation of Quick Machine Recovery, a built-in network speed test on the taskbar, and the ability to set WebP images as desktop backgrounds. Additionally, improvements have been made to the Windows Update settings page and the reliability of waking from sleep. No new issues have been reported with this month's updates.

Winsage

March 12, 2026

Windows 10/11 Patch Day March: Microsoft delivers the big security update, but as usual, the real message is in the fine print

In March, Microsoft released cumulative security updates for Windows 10 and Windows 11, with support for certain versions continuing until March 2026. The updates include KB5079466 for Windows 11 version 26H1, KB5079473 for versions 24H2 and 25H2, KB5078883 for version 23H2, and KB5078885 for Windows 10 version 22H2. These updates will be distributed via Windows Update, the Microsoft Update Catalog, and WSUS for enterprise environments. This month, Microsoft combined the Servicing Stack Update (SSU) with the Latest Cumulative Update, simplifying the update process. Key enhancements include improvements to Secure Boot, with expanded device target data for new certificates, and security enhancements for Explorer’s search functionality in Windows 11 versions 24H2 and 25H2. A fix for Windows Defender Application Control (WDAC) was also implemented, addressing issues with COM objects under certain policy configurations. The Windows System Image Manager received a new warning dialog for confirming the trustworthiness of catalog files, which is important for enterprise environments. Updates for Windows 10 22H2, despite its end-of-life status, included fixes for secure boot issues and improvements for file version history in the Control Panel. An SSU for Windows 11 (KB5077869) was also released to maintain update stability. Microsoft's updates scheduled for March 2026 will address vulnerabilities in components like the Windows App Installer, SQL Server, and Microsoft Office. The Security Update Guide provides detailed information on specific vulnerabilities and affected components.

Winsage

February 28, 2026

Microsoft testing Windows 11 batch file security improvements

Microsoft has released new Windows 11 Insider Preview builds that enhance security and performance for batch files and CMD scripts. IT administrators can now activate a secure processing mode by adding the LockBatchFilesInUse registry value, which prevents modifications to batch files while they are running. This update also requires signature validation only once per batch file, improving performance. Additionally, the Shared Audio feature has been refined, allowing users to share audio across multiple devices with individual volume sliders and a new taskbar indicator. The feature now supports more Bluetooth LE Audio accessories, including Samsung Galaxy Buds 4, Sony WF-1000XM6, and Xbox Wireless Headset. These updates are available for Windows Insiders in the Beta and Dev channels with specific preview builds installed.