Windows Server 2022 build 20348.4171 (KB5065432) — release notes, known issues

Windows Server · 2022 · Release · Security update (Patch Tuesday)

September 9, 2025—KB5065432 (OS Build 20348.4171)

Windows Server 2022: Supported LTSC release

All 2022 builds JSON — this build from the builds API

Microsoft's known issues — KB5065432

Issue Known issue Symptoms We are aware of an edge case affecting hotpatched devices that have installed the September 2025 Hotpatch update ( KB5065306 ) or the September 2025 security update ( KB5065432 ). These devices may experience failures with PowerShell Direct (PSDirect) connections when the host and guest virtual machines (VMs) are both not fully updated. When a patched guest VM attempts to connect to an unpatched host (or vice versa), the system is expected to fall back to a legacy handshake and clean up the socket gracefully. However, this fallback mechanism fails intermittently, resulting in socket cleanup issues. The connection failure might appear random, and users might observe Event ID 4625 log Workaround: This issue is addressed in KB5066359 . If your hotpatched device is experiencing issues with PSDirect connection, we recommend updating both the host and guest VM with these updates. This issue is addressed in KB5066782 ,

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