Windows Server 2025 build 26100.3194 (KB5051987) — release notes, known issues

Windows Server · 2025 · Release · Security update (Patch Tuesday)

February 11, 2025—KB5051987 (OS Build 26100.3194)

Release
Cumulative update
KB5051987 — Microsoft's article, opens in a new tab
Feb 11, 2025

Windows Server 2025: Current LTSC release

All 2025 builds JSON — this build from the builds API

Microsoft's known issues — KB5051987

Issue Known issue Remote desktop might freeze Workaround: All users
Issue Known issue Remote desktop might disconnect Workaround: All users
Issue Known issue After installing the February 2025 Security update ( KB5051987 ), released February 11, 2025, and later updates, on Windows Server 2025 devices, you might experience Remote Desktop sessions freezing shortly after connection. When this issue occurs, mouse and keyboard input become unresponsive within the session, requiring users to disconnect and reconnect
Issue Known issue After installing the January 2025 Windows preview update ( KB5050094 ) and later updates, users might experience unexpected disconnections with Remote Desktop Protocol (RDP) sessions, including Remote Desktop Services (RDS). We've observed a significant increase in reports of this issue following the release on the March 2025 Windows security update ( KB5053598 ).Users might notice their RDP sessions unexpectedly disconnecting after 65 seconds when establishing UDP-based connections from Windows 11, version 24H2 devices to RDS deployments running versions Windows Server 2016 or earlier. Resulting from this issue, users might experience frequent disconnections from their Remote Desktop and RD
Issue Known issue Remote desktop might freeze Workaround: This issue was resolved by Windows update released April 8, 2025 ( KB5055523 ). To keep your device performing at its best, make sure you have the latest update for your device. It contains important improvements and issue resolutions.
Issue Known issue Remote desktop might disconnect Workaround: This issue is addressed in KB5053656 . IT Admins If you have an enterprise-managed device and have installed the update released March 27, 2025 ( KB5053656) or later, you do not need to use a Known Issue Rollback (KIR) or a special Group Policy to resolve this issue. If you are using an update released before March 27, 2025, and have this issue, your IT admin can resolve it by installing and configuring the special Group Policy listed below. The special Group Policy can be found in Computer Configuration > Administrative Templates. For info on deploying and configuring these special Group Policies, see How to use Group Policy to deploy a Known Issue Rollback .Download for Windows 11 Version