file servers Archives

Winsage

December 25, 2025

Native NVMe support in Windows Server 2025 promises dramatic speed gains

Microsoft has introduced native NVMe support in Windows Server 2025, enhancing the performance of modern NVMe devices, including PCIe Gen5 SSDs and high-end Host Bus Adapters (HBAs). This feature eliminates the translation layers that previously routed NVMe I/O through SCSI, resulting in reduced processing overhead and latency. Testing shows that Windows Server 2025 can achieve up to 80% higher 4K random read IOPS and approximately 45% fewer CPU cycles per I/O compared to Windows Server 2022. The enhancements benefit enterprise applications such as SQL Server, OLTP workloads, and virtualization environments using Hyper-V, as well as analytics and AI/ML workloads. To utilize native NVMe, system administrators must use the in-box Windows NVMe driver, and the feature requires an opt-in process with the latest cumulative update and registry key or Group Policy configuration. Organizations should validate the implementation to assess its impact on their production environments.

Winsage

December 23, 2025

Windows 11 rockets SSD performance to new heights with hacked native NVMe driver — up to 85% higher random workload performance in some tests

Microsoft has introduced a native NVMe driver for Windows Server 2025, which has been unlocked by users on standard Windows 11 systems, leading to performance improvements. Early benchmarks show a 13% increase in AS SSD scores after activating the driver, with random write speeds improving by 16% and 22% for 4K and 4K-64Thrd workloads, respectively. In another test, random read speeds for a Crucial T705 SSD increased by 12%, and random write speeds improved by 85%. The new driver reduces processing latency by eliminating legacy SCSI overhead, enhancing storage performance. Native NVMe support for Windows Server has been introduced after 14 years, but mainstream Windows users still face challenges accessing it due to incompatibility with third-party SSD management tools. The benefits are most significant in enterprise environments rather than for average consumers or gaming systems.

Winsage

November 17, 2025

Windows 11 KB5068861 won’t install, File Explorer SMB search not working on network shares, and other issues

Windows 11 users are facing installation issues with the KB5068861 update from the November 2025 Patch Tuesday release, which addresses 63 critical security vulnerabilities. Errors reported include 0x80070306, 0x800f0983, and 0x800f081f. Affected users can wait for an optional release or use the Media Creation Tool, which downloads the same patch. Some users have reported a malfunctioning SMB search feature after the update. The installation errors have prompted reports of specific error codes, and attempts to resolve them through SFC scans or health checks have been largely ineffective. Downloading the .msu package from the Microsoft Update Catalog is recommended, followed by an installation attempt. If unsuccessful, the Media Creation Tool can be used while retaining user data. The November 2025 Update includes enhancements like a revamped Start menu, improved battery icons, and performance improvements, particularly for gamers. However, some users have encountered Bluetooth connectivity issues, especially on AMD PCs, with a temporary fix involving adjustments in Device Manager. The KB5068861 update has also caused a bug affecting search functionality over shared networks, leading to slower search results or empty listings for businesses. This issue arises from a breakdown in communication between the Windows client and the server’s search index. Users can restore functionality by restarting the Windows Search service or rebuilding the index. Additionally, the remote search functionality over SMB is compromised, preventing the Windows client from utilizing the server’s index. Users may need to uninstall the update to restore functionality, which requires disabling the Sandbox feature first. Specific DISM commands can be used to identify and remove the update, or it can be uninstalled through the Settings menu.

Winsage

November 12, 2025

Windows Kernel 0-Day Vulnerability Actively Exploited in the Wild to Escalate Privileges

Microsoft has identified a vulnerability in its Windows operating system, designated as CVE-2025-62215, which allows for elevation of privilege within the Windows Kernel. This flaw is currently being exploited in real-world scenarios. Published on November 11, 2025, CVE-2025-62215 is classified as an Important issue and arises from a race condition and improper memory management leading to a double-free scenario. Exploiting this vulnerability requires a high complexity attack and can grant SYSTEM-level privileges to an attacker who is already an authorized user. The affected Windows versions include: - Windows 10 (various builds): KB5068858, November 12, 2025 - Windows 11 version 22H2: KB5068865, November 12, 2025 - Windows 11 version 23H2: KB5068862, November 12, 2025 - Windows 11 version 24H2: KB5068861, November 12, 2025 - Windows Server 2019: KB5068859, November 12, 2025 - Windows Server 2022: KB5068860, November 12, 2025 - Windows Server 2025: KB5068861, November 12, 2025 Organizations are urged to prioritize patching CVE-2025-62215, especially on servers and administrative workstations, as there are currently no workarounds available.

Winsage

November 12, 2025

Windows Kernel 0‑day Vulnerability Actively Exploited in the Wild to Escalate Privilege

Microsoft has identified a critical vulnerability, CVE-2025-62215, affecting the Windows Kernel, which is currently being exploited. This flaw, rated as Important, involves an elevation of privilege issue due to improper synchronization of shared resources, categorized under race condition (CWE-362) and double free (CWE-415). Exploitation requires high complexity and local authorization, allowing attackers to gain SYSTEM privileges for significant control over the system. The vulnerability affects various versions of Windows, including Windows 10, Windows 11 (multiple versions), and Windows Server (2019, 2022, and 2025), with patches released on November 12, 2025. Organizations are advised to prioritize swift patching and detection efforts, especially for servers and administrative workstations.

Winsage

October 29, 2025

When the Patches Stop: Protecting Your (Windows 10) Environment with CDR

Microsoft has ceased providing free security updates for Windows 10 as of mid-October 2025, marking the end of support for the operating system. Organizations can purchase Extended Security Updates (ESUs) to extend support temporarily, but these do not protect against zero-day vulnerabilities. Transitioning to Windows 11 presents challenges, including hardware incompatibility and the need for extensive planning and validation in regulated industries like healthcare and finance. Many businesses rely on Windows 10 systems that are integral to their operations and cannot easily be replaced. Cybercriminals exploit unpatched systems, with approximately 70% of successful breaches stemming from zero-day attacks. Traditional defenses are ineffective against undisclosed vulnerabilities, and human behavior remains a significant risk factor. Votiro offers a proactive solution through Content Disarm and Reconstruction (CDR), which sanitizes files in real-time to eliminate malware before it reaches unpatched systems, providing a protective barrier for organizations still using Windows 10.

Winsage

October 16, 2025

Microsoft October 2025 Security Update Causes Active Directory Sync Issues on Windows Server 2025

Microsoft's security updates have caused synchronization failures in Active Directory environments on Windows Server 2025, acknowledged on October 14, 2025. The issue stems from the September 2025 security update KB5065426, affecting applications like Microsoft Entra Connect Sync, which struggle to replicate AD security groups with over 10,000 members. This problem leads to incomplete synchronization, particularly impacting large enterprises in sectors like finance and healthcare, resulting in access denials and compliance risks. A registry tweak can temporarily disable the problematic feature, but Microsoft warns of potential risks in modifying the registry. The company is investigating the issue and plans to release a fix in a future update, with client platforms remaining unaffected. IT teams are advised to monitor updates and test changes in staging environments before applying them in production.

Winsage

October 8, 2025

CISA Warns of Active Exploits in Critical Windows Flaw

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has issued a critical alert about a significant vulnerability in Microsoft Windows, identified as CVE-2021-43226. This flaw allows attackers to elevate their privileges to SYSTEM level, threatening enterprise networks. It exists within the Common Log File System (CLFS) driver, enabling local, privileged attackers to bypass security measures and gain unauthorized control over systems running various Windows versions, including Windows 10, 11, and Server 2016, 2019, and 2022, as well as legacy systems like Windows 7 SP1 and Server 2008 R2 SP1. The vulnerability arises from improper validation of user-supplied data, leading to buffer overflow and arbitrary code execution without user interaction. It has a CVSS score of 7.8, indicating high severity, and proof-of-concept exploit code is already circulating in underground forums. CISA has set a remediation deadline of October 27, 2025, mandating federal agencies and critical infrastructure operators to implement patches. Recommendations for mitigation include immediate patching, strengthening endpoint controls, implementing layered defenses, continuous monitoring, regular vulnerability management, and maintaining a robust incident response program.

Winsage

October 8, 2025

How to deploy Data Duplication on Windows Server

Storage capacity is crucial for managing data costs and performance, leading to the use of data deduplication to reduce redundant data and optimize storage space. Microsoft’s Data Deduplication feature, introduced with Windows Server 2012, can achieve storage savings of up to 50% for user documents and 95% for virtualization libraries. Data deduplication is applicable to file servers, backup storage servers, and virtualization hosts, requiring Windows Server 2012 or later and the NTFS file system. To install Data Deduplication, users must access Server Manager, add the feature, and can also use PowerShell with the cmdlet PLACEHOLDERb80efd5ce6cbf150. Configuration involves managing settings through Server Manager, including selecting a deduplication type, setting a file age, and scheduling the deduplication process. Monitoring and optimizing deduplication can be done using the Data Deduplication Saves Evaluation Tool (ddpeval.exe) and PowerShell cmdlets like PLACEHOLDER6242a4d48a44de3e. Alternative deduplication products include Veeam Backup and Replication, Arcserve UDP, and Acronis Cyber Protect, which may offer additional features for cloud or hybrid environments. Best practices for deduplication include using the latest Windows Server versions, avoiding system volumes, ensuring adequate free space, and scheduling tasks during off-peak hours. Troubleshooting tips involve checking memory and processor performance, utilizing ddpeval.exe, and reviewing Event Viewer logs.