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Microsoft’s Patch Tuesday release for April is a whopper
Winsage
April 18, 2026

Microsoft’s Patch Tuesday release for April is a whopper

A series of updates have been released, focusing on system integrity and performance. Users should perform verification tasks, including installing, uninstalling, and repairing MSI packages, connecting and disconnecting cloud sync providers, and enrolling devices in Intune or MDM solutions. The Common Log File System driver (clfs.sys) is receiving a follow-up patch, along with updates to Storage Spaces (spaceport.sys) and app isolation file system drivers (bfs.sys, wcifs.sys). Users should also run Windows Update installation and rollback cycles, install and uninstall applications, and verify data integrity through backup solutions. For Storage Spaces, creating a pool with mirrored and thin virtual disks and ensuring clean deletion is necessary. April's updates for Office target MSI editions, including Excel 2016 (KB5002860), PowerPoint 2016 (KB5002808), Office 2016 shared libraries (KB5002859), and SharePoint Server editions from 2016 to 2019. These updates do not apply to Click-to-Run deployments like Microsoft 365 Apps. Users should validate complex Excel workbooks, PowerPoint presentations, SharePoint document libraries, and the functionality of Office add-ins. Testing for two High Risk components is essential: changes to Kerberos may disrupt services using RC4 keytabs, and the Remote Desktop client update requires validation of clipboard functionality, printer redirection, and session reconnection. Validating Secure Boot and BitLocker is critical as CVE-2023-24932 key rolling progresses. Additionally, cloud sync testing is important due to five patches to the Projected File System driver, and regression testing is needed for dual afd.sys updates and VPN/IPsec patches across remote-access infrastructure. Office updates are limited to MSI editions.
RedSun: Windows 0day when Defender becomes the attacker
Winsage
April 18, 2026

RedSun: Windows 0day when Defender becomes the attacker

A vulnerability has been discovered in Windows Defender that allows standard users to exploit a logic error in the file remediation process, enabling code execution with elevated privileges without administrative access. This flaw, identified by security researcher Chaotic Eclipse, occurs because Windows Defender does not verify if the restoration location of flagged files has been altered through a junction point. The exploit, named RedSun, takes advantage of a missing validation in the MpSvc.dll file, allowing attackers to redirect file restoration to the C:WindowsSystem32 directory. RedSun operates by chaining together four legitimate Windows features: Opportunistic Locks (OPLOCKs), Cloud Files API, Volume Shadow Copy Service (VSS), and Junction Points. The execution of the exploit involves monitoring shadow copies, triggering Defender's detection, synchronizing OPLOCKs, and ultimately writing malicious binaries to the System32 directory. The root cause is the lack of reparse point validation in the restoration process, and currently, no patch or CVE has been assigned for this vulnerability. It affects Windows 10, Windows 11, and Windows Server 2019 and later, and organizations are advised to implement behavioral detection strategies until a fix is available.
Pragmata review - nostalgic aesthetics, S-tier combat
AppWizard
April 17, 2026

Pragmata review – nostalgic aesthetics, S-tier combat

Pragmata is a linear third-person shooter that offers approximately 12 hours of gameplay focused on action rather than storytelling. The protagonist, Hugh, and his android companion, Diana, navigate challenges on the moon, utilizing Diana's hacking abilities to exploit enemy vulnerabilities. The game features a dual-control system that balances shooting and hacking, with players solving real-time puzzles while engaging in combat. Hugh's arsenal evolves from a basic pistol to more powerful weapons, and combat encounters reward players with upgrade materials for enhancing their abilities. Boss battles present unique tactical challenges. However, the narrative struggles with character development and emotional depth, resulting in a less impactful story. Despite these shortcomings, the innovative gameplay mechanics and nostalgic elements make Pragmata an engaging experience.
Windows 11's April update is locking some users out of their PCs
Winsage
April 16, 2026

Windows 11’s April update is locking some users out of their PCs

Users have reported issues with Windows 11 update KB5083769, which has triggered BitLocker recovery key prompts, locking some users out of their PCs. Microsoft acknowledged that the problem mainly affects corporate devices with specific BitLocker Group Policy settings. The issue is limited to systems where BitLocker is enabled, certain Group Policy configurations are set, and the Secure Boot State PCR7 Binding is “Not Possible.” Affected users need to enter their BitLocker recovery key or contact IT support for assistance. Microsoft has also provided guidance for IT departments to perform a Known Issue Rollback to remove the problematic updates, though this may expose systems to vulnerabilities.
Microsoft April Update Forces BitLocker Recovery on Servers
Winsage
April 16, 2026

Microsoft April Update Forces BitLocker Recovery on Servers

A recent Microsoft security update, April 2026 KB5082063, has caused issues for administrators of Windows Server 2025 and Windows 11 systems, with many devices entering BitLocker recovery mode after reboot, requiring a 48-digit recovery key. This issue primarily affects enterprise-managed systems with specific TPM Group Policy settings involving PCR7 validation. Similar problems have been reported with updates KB5083769 and KB5082052 on Windows 11. The issue arises from five conditions: BitLocker must be enabled on the OS drive, the Group Policy must include PCR7, the msinfo32.exe tool must show Secure Boot State PCR7 Binding as “Not Possible,” the Windows UEFI CA 2023 certificate must be in the Secure Boot Signature Database, and the device must not be using the 2023-signed Windows Boot Manager. Microsoft suggests two workarounds: removing the TPM validation Group Policy before the update and re-enabling BitLocker, or applying a Known Issue Rollback (KIR) before installation. Skipping the April updates is not advisable due to the addressing of 167 vulnerabilities, including two zero-days. BitLocker recovery issues following updates have been recurring since 2022, with similar incidents reported in August 2022, August 2024, and May 2025, indicating ongoing challenges with Secure Boot certificates and TPM validation bindings in enterprise environments.
Microsoft: April updates trigger BitLocker key prompts on some servers
Winsage
April 16, 2026

Microsoft: April updates trigger BitLocker key prompts on some servers

Microsoft announced that certain Windows Server 2025 devices may experience a BitLocker recovery prompt after installing the April 2026 KB5082063 Windows security update. The recovery mode will be triggered under specific conditions: BitLocker must be enabled on the operating system drive, the Group Policy for TPM validation must be configured with PCR7, the Secure Boot State PCR7 Binding must indicate "Not Possible," the Windows UEFI CA 2023 certificate must be in the Secure Boot Signature Database, and the device must not be using the 2023-signed Windows Boot Manager. Microsoft stated that this issue is unlikely to affect personal devices, as the configurations are mainly found in enterprise-managed systems. They are working on a resolution and recommend administrators remove the Group Policy configuration before deploying the update. If removal is not possible, applying a Known Issue Rollback (KIR) is advised to prevent triggering the recovery prompt. Microsoft has previously addressed similar BitLocker recovery prompt issues in May 2025, August 2024, and August 2022.
Linux gamers didn't do anything wrong, but they might pay for Windows piracy anyway
Winsage
April 8, 2026

Linux gamers didn’t do anything wrong, but they might pay for Windows piracy anyway

Gaming on Linux has advanced significantly due to Valve's Proton compatibility layer and the Steam Deck, allowing most single-player PC games to run on the platform. Data from ProtonDB indicates that nearly every Windows game is now playable on Linux. However, hypervisor-based DRM bypass techniques have emerged, weakening Denuvo's anti-tamper protections and reviving day-zero piracy. Hypervisors operate beneath the operating system, allowing pirates to manipulate Denuvo's validation checks, drastically reducing the time to crack games. This resurgence of piracy poses security risks, as users must disable kernel-level security features, exposing their systems to vulnerabilities. Irdeto, the company behind Denuvo, recognizes the need for updated security measures, but these could complicate the gaming experience for Linux users. Linux's open-source nature complicates enforcing kernel integrity, making effective anti-cheat and DRM systems challenging. Despite these issues, Linux gaming has seen considerable growth, but the threat of hypervisor-based piracy could jeopardize this progress and lead to tighter DRM measures that may reduce Linux compatibility.
Disgruntled researcher drops “BlueHammer” Windows zero-day LPE exploit
Winsage
April 7, 2026

Disgruntled researcher drops “BlueHammer” Windows zero-day LPE exploit

A security researcher, known as "Nightmare-Eclipse," released proof-of-concept exploit code for a Windows zero-day vulnerability called "BlueHammer," which allows local privilege escalation (LPE). The exploit has been validated by another researcher, Will Dormann, who confirmed it can escalate privileges on Windows systems, allowing non-administrative users to gain SYSTEM-level access. The exploit's reliability varies across different Windows versions, with inconsistent success rates reported. Microsoft has not acknowledged the vulnerability or provided a patch, raising concerns about potential exploitation by threat actors. Users are advised to restrict local user access, monitor for suspicious activity, and enable advanced endpoint protection.
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