March 10, 2020—KB4540670 (OS Build 14393.3564)

Applies to: Windows 10, version 1607, all editionsWindows Server 2016

Highlights


  • Updates to improve security when using Microsoft Office products.
  • Updates to improve security when using Microsoft Edge and Internet Explorer.
  • Updates for verifying user names and passwords.
  • Updates to improve security when Windows performs basic operations.
  • Updates for storing and managing files.
  • Updates to improve security when using external devices (such as game controllers, printers, and web cameras).

Improvements and fixes


This security update includes quality improvements. Key changes include:

  • Addresses an issue that might prevent icons and cursors from appearing as expected.
  • Security updates to Microsoft Scripting Engine, Windows App Platform and Frameworks, Microsoft Graphics Component, Windows Media, Windows Silicon Platform, Microsoft Edge, Internet Explorer, Windows Fundamentals, Windows Authentication, Windows Cryptography, Windows Kernel, Windows Core Networking, Windows Storage and Filesystems, Windows Peripherals, Windows Network Security and Containers, Windows Update Stack, and Windows Server.

If you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.

For more information about the resolved security vulnerabilities, please refer to the Security Update Guide.

Known issues in this update


Symptom Workaround
After installing KB4467684, the cluster service may fail to start with the error “2245 (NERR_PasswordTooShort)” if the group policy “Minimum Password Length” is configured with greater than 14 characters.

Set the domain default "Minimum Password Length" policy to less than or equal to 14 characters.

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

When using Windows Server containers with the March 10, 2020 updates, you might encounter issues with 32-bit applications and processes. For important guidance on updating Windows containers, please see Windows container version compatibility and Update Windows Server containers.

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 cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing the LCU and applying Microsoft security fixes. For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.

If you are using Windows Update, the latest SSU (KB4540723) 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 and Microsoft Update Yes None. This update will be downloaded and installed automatically from Windows Update.
Microsoft Update Catalog Yes To get the standalone package for this update, go to the Microsoft Update Catalog website.
Windows Server Update Services (WSUS) Yes

This update will automatically sync with WSUS if you configure Products and Classifications as follows:

Product: Windows 10

Classification: Security Updates

 

File information

For a list of the files that are provided in this update, download the file information for cumulative update 4540670