June 9, 2020—KB4561621 (OS Build 17134.1550)
Applies To
Windows 10, version 1803, all editions Windows 10, version 1803 (Enterprise, Education, IoT Enterprise)Release Date:
09/06/2020
Version:
OS Build 17134.1550
IMPORTANT We have been evaluating the public health situation, and we understand this is impacting our customers. In response to these challenges, we are prioritizing our focus on security updates. Starting in May 2020, we are pausing all optional non-security releases (C and D updates) for all the supported versions of Windows client and server products (Windows 10, version 2004 down to Windows Server 2008 SP2).
There is no change to the monthly security updates (B release – Update Tuesday); these will continue as planned to ensure business continuity and to keep our customers protected and productive.
Windows 10, version 1803 (the April 2018 Update) Home and Pro editions have reached end of service. For Windows 10 devices that are at, or within several months of reaching end of service, Windows Update will automatically initiate a feature update (with users having the ability to choose a convenient time). This keeps those devices supported and receiving the monthly updates that are critical to device security and ecosystem health.
Highlights
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Updates to improve security when using Internet Explorer and Microsoft Edge.
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Updates to improve security when Windows performs basic operations.
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Updates to improve security when using Microsoft Office products.
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Updates to improve security when using input devices (such as a mouse, keyboard, or stylus).
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Improves security in Microsoft Xbox and the Microsoft Store.
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Updates for verifying usernames and passwords.
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Updates for storing and managing files.
Improvements and fixes
This security update includes quality improvements. Key changes include:
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Addresses an issue that prevents users from updating .msi files from a network folder.
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Security updates to the Microsoft Scripting Engine, Microsoft Edge, Internet Explorer, Windows App Platform and Frameworks, Windows Media, Windows Kernel, Microsoft Graphics Component, Windows Input and Composition, Windows Shell, Microsoft Xbox, the Microsoft Store, Windows Cloud Infrastructure, Windows Fundamentals, Windows Management, Windows Authentication, Windows Cryptography, Microsoft HoloLens, Windows Virtualization, Windows Storage and Filesystems, Windows File Server and Clustering, Windows Hybrid Storage Services, Windows Update Stack, and the Microsoft JET Database Engine.
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 this update, certain printers might fail to print. The print spooler might throw an error or close unexpectedly when attempting to print, and no output will come from the affected printer. You might also encounter issues with the apps you are attempting to print from. You might receive an error from the app or the app might close unexpectedly. Note This issue might also affect software-based printers, for example printing to PDF. |
This issue is resolved in KB4567514. |
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 (KB4562251) 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 4561621.
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