Windows Server 2025 build 26100.32522 (KB5078740) — release notes, known issues

• Issue Known issue After installing KB5070881 or later updates, Windows Server Update Services (WSUS) does not display synchronization error details within its error reporting. This functionality is temporarily removed to address the Remote Code Execution Vulnerability, CVE-2025-59287 .

Microsoft's release notes for KB5078740 ›

No problems reported on the forum for this build yet. Threads that name 26100.32522 or KB5078740 and describe a fault appear here automatically.

• Coverage NetLib Winter 2026 Transparent Encryption: SQL Server 2025, Azure Key Vault & EKM Mar 18, 2026 · Windows Server 2025 coverage from this build's release window
• Coverage CISA Adds Zimbra XSS CVE-2025-66376 to KEV—Act Now Against Active Exploitation Mar 18, 2026 · Windows Server 2025 coverage from this build's release window
• Coverage Schneider CVE-2025-11739: PME & EPO Unsafe Deserialization Hotfix Guide Mar 19, 2026 · Windows Server 2025 coverage from this build's release window
• Coverage Mitsubishi CNC DoS CVE-2025-2399 on Port 683: Emergency Shutdown Risk Mar 19, 2026 · Windows Server 2025 coverage from this build's release window
• Coverage Enable Native NVMe on Windows 11: Hidden Flags, ViVeTool, and Server 2025 Gains Mar 23, 2026 · Windows Server 2025 coverage from this build's release window
• Fix Plant iT/Brewmaxx Redis Use-After-Free: Patch ProLeiT-2025-001 Now Mar 24, 2026 · Windows Server 2025 coverage from this build's release window
• Coverage Microsoft Takes 5th on Metacritic 2025—Xbox’s Quality-First Publishing Comeback Mar 25, 2026 · Windows Server 2025 coverage from this build's release window
• Fix CVE-2025-70614: Fix Tenant SMS Access Control Flaw in OC Messaging & USSD Gateway Mar 26, 2026 · Windows Server 2025 coverage from this build's release window

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