data protection

Winsage
May 8, 2026
A recent Windows update, KB5083769, released on April 14, 2026, blocks the psmounterex.sys driver, disrupting the functionality of third-party backup software like Acronis Cyber Protect Cloud, Macrium Reflect, and NinjaOne. This driver is essential for loading and mounting backup storage images. Users may encounter errors related to Microsoft VSS during backup attempts. The update is a security enhancement, not a bug, and users are advised to upgrade their backup software to versions that use a newer driver or temporarily uninstall the KB5083769 update. It is recommended to check for updates from the backup software provider and pause Windows Updates to prevent automatic reinstallation of the problematic update until a fix is available.
Winsage
May 6, 2026
System Restore is a recovery tool in Windows that allows users to revert their systems to a previous state, originating with Windows ME. It generates restore points that can be created manually or automatically, with a maximum retention of 60 days starting from the Windows 11 24H2 update in 2025. System Restore captures essential system files and settings but does not recover personal files. The new Point-in-Time Restore feature, introduced in 2025 and appearing in the Windows 11 Insider Experimental preview in April 2026, captures a broader range of data, including user files and applications, and operates on a scheduled basis with snapshots retained for up to 72 hours. It is optional for standard users, enabled by default for PCs with 200GB or more storage, and has storage limits set to 2% of total drive capacity. In enterprise settings, it is always enabled for Windows 365 Enterprise, maintaining restore points for up to one month and utilizing cloud storage. Point-in-Time Restore aims to improve the recovery experience and address limitations of the classic System Restore.
Tech Optimizer
May 5, 2026
Bitdefender Mobile Security is currently regarded as the best mobile antivirus software, achieving a 100% detection rate for malware on Android devices according to AV-TEST's August 2025 report. The 2026 version introduces App Anomaly Detection and includes features like Scam Alert and anti-theft tools. Sophos Intercept X for Mobile offers a free version with a perfect score in AV-TEST's comparisons and features such as multi-factor authentication and a Privacy Advisor. Surfshark Antivirus, part of the Surfshark One package, scored six out of six in AV-TEST's evaluations and includes various security tools, but is only available for Android, macOS, and Windows. Avast Mobile Security is a popular free option with robust features and achieved perfect scores in protection and usability in AV-TEST's September-October 2025 report. AVG Antivirus, operating on the same engine as Avast, also detected 100% of malware in AV-TEST's March-April 2025 evaluations and includes anti-theft tools.
Winsage
May 4, 2026
Microsoft has acknowledged that the April 2026 security updates have disrupted the functionality of various third-party backup applications using the psmounterex.sys driver, raising concerns among users. The issue primarily affects software leveraging the Volume Shadow Copy Service (VSS) snapshots, leading to failures due to VSS service timeouts. Notable impacted products include Macrium Reflect, Acronis Cyber Protect Cloud, UrBackup Server, and NinjaOne Backup, used on Windows 11, Windows Server, and Windows 10 devices. Disruptions can manifest as failures to mount backup image files, errors or timeouts when browsing or restoring from backup images, and error messages related to VSS timeouts. Microsoft updated its support documentation to clarify that the April updates included a security hardening change that added psmounterex.sys to the vulnerable driver blocklist to protect against a high-severity buffer overflow vulnerability (CVE-2023-43896). Affected users are advised to upgrade to newer application versions with updated drivers and not to uninstall or pause the security update. Users can check if the Microsoft Vulnerable Driver Blocklist is blocking a driver by looking for Event ID 3077 in the Code Integrity Operational log. Additionally, Microsoft has alerted users that some Windows Server 2025 devices may boot into BitLocker recovery mode after installing the KB5082063 update and has issued out-of-band updates to address installation failures and restart loops affecting Windows Server systems after the April 2026 updates.
Winsage
May 1, 2026
The KB5083769 security update released in April 2026 has disrupted the functionality of various third-party backup applications on Windows 11 versions 24H2 and 25H2, primarily due to issues with the Volume Shadow Copy Service (VSS). Affected applications include Acronis Cyber Protect Cloud, Macrium Reflect, NinjaOne Backup, and UrBackup Server. Users have reported receiving an error message indicating that backups have failed due to VSS timeouts. Acronis has acknowledged the issue, stating it affects both Windows 11 Pro and Home editions, and warns of potential broader system issues. A temporary solution involves uninstalling the KB5083769 update or pausing Windows updates. Additionally, Microsoft has issued out-of-band updates for critical issues affecting Windows Server systems and warned that some Windows Server 2025 devices may encounter BitLocker recovery prompts after installing the KB5082063 update.
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