August 17, 2019—KB4512478 (Preview of Monthly Rollup)

Windows 8.1 Windows Server 2012 R2 More...Less

Release Date:

8/17/2019

Version:

Preview of Monthly Rollup

Improvements and fixes

This non-security update includes improvements and fixes that were a part of KB4512488 (released August 13, 2019) and also includes these new quality improvements as a preview of the next Monthly Rollup update:

Addresses an issue in which the memory usage of LSASS continues to grow until it is necessary to restart the system.
Addresses an issue that may cause rdpdr.sys to stop responding or stop working (0x18, 0x50, 0xa, 0x27, 0x133). This issue occurs when Remote Desktop Protocol (RDP) clients use a redirected drive on the local system.
Addresses an issue that may prevent devices from starting when they start up using Preboot Execution Environment (PXE) images from Windows Deployment Services (WDS) or System Center Configuration Manager (SCCM). The error is, "Status: 0xc0000001, Info: A required device isn't connected or can't be accessed."

Known issues in this update

Symptom

Workaround

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.

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.

How to get this update

Before installing this update

Microsoft strongly recommends you install the latest servicing stack update (SSU) for your operating system before installing the latest Rollup. SSUs improve the reliability of the update process to mitigate potential issues while installing the Rollup.

If you are using Windows Update, the latest SSU (KB4504418) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the Microsoft Update Catalog.

Install this update

Release Channel	Available	Next Step
Windows Update or Microsoft Update	Yes	This is provided as an Optional update on Windows Update. For more information about how to run Windows Update, see How to get an update through Windows Update.
Microsoft Update Catalog	Yes	To get the standalone package for this update, go to the Microsoft Update Catalog.
Windows Server Update Services (WSUS)	Yes	This update will automatically synchronize with WSUS if you configure Products and Classifications as follows: Product: Windows 8.1, Windows Server 2012 R2 Classification: Update