Windows 10 · Release · Security update (Patch Tuesday)

January 14, 2020—KB4534306 (OS Build 10240.18453)

What's in this update

Updates to improve security when storing and managing files. Updates to improve security when using input devices such as a mouse, keyboard, or stylus.

From Microsoft's release notes for KB4534306.

Microsoft's known issues — KB4534306

  • Issue Known issue Certain operations, such as rename , that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, “STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)”. This occurs when you perform the operation on a CSV owner node from a process that doesn’t have administrator privilege. Workaround: Do one of the following: Perform the operation from a process that has administrator privilege. Perform the operation from a node that doesn’t have CSV ownership. Microsoft is working on a resolution and will provide an update in an upcoming release.

Microsoft's release notes for KB4534306 ›

Known issues — reported on the forum

No problems reported on the forum for this build yet. Threads that name 10240.18453 or KB4534306 and describe a fault appear here automatically.

In the news

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Discussed on the forum