March 2017 Preview of Monthly Quality Rollup for Windows 8.1 and Windows Server 2012 R2

Applies to: Windows Server 2012 R2 DatacenterWindows Server 2012 R2 StandardWindows Server 2012 R2 Essentials

The March 2017 Preview of Monthly Quality Rollup includes some new improvements and fixes for the Windows 8.1 and Windows Server 2012 R2 platforms. We recommend that you apply this quality rollup as part of your regular maintenance routines. Before you install this update, see the Prerequisites and the Restart requirement sections.

Improvements and fixes


To learn more about the nonsecurity improvements and fixes in this update, see the "March 21, 2017 – KB4012219" section in Windows 8.1 and Windows Server 2012 R2 update history.

Known issue in this update


Symptoms Workaround

If you’re freshly installing or re-installing the Remote Desktop Web Access (RD Web Access) role service, the auto-generated self-signed certificate is still using Secure Hash Algorithm 1 (SHA-1).

There are two options:

  • Configure a trusted certificate for RDWeb (recommended).
  • Re-create the self-signed certificate for RDWeb by using Remote Desktop Management Server (RDMS) UI.
This update introduced an issue in which, if an iSCSI target becomes unavailable, attempts to reconnect will cause a leak. Initiating a new connection to an available target will work as expected. Microsoft is working on a resolution and will provide an update in an upcoming release.
For more information about this issue, see the following section.
 

This update contains a crippling iSCSI connection leak in msiscsi.sys driver that results in computer hangs.

Microsoft is working on a resolution and will provide an update in an upcoming release.

How to get this update


Important If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.

Method 1: Windows Update

This update 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.

Method 2: Microsoft Update Catalog

To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

Note You must be running Microsoft Internet Explorer 6 or later versions.

Update detail information

Prerequisites

To apply this update, you must have April 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 (2919355) installed on Windows 8.1 or Windows Server 2012 R2.

Restart requirement

You must restart the computer after you apply this update.

Registry information

To apply this update, you don't have to make any changes to the registry.

Update replacement information

This update doesn't replace any previously released update.

File Information


File information

For a list of the files that are provided in this update, download the file information for update rollup 4012219.

References


For more information about Windows Update, go to the following Microsoft websites:

Troubleshoot problems with installing updates

Windows Update: Frequently Asked Questions

Learn about the terminology that Microsoft uses to describe software updates.