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.
Note This release also contains updates for Microsoft HoloLens (OS Build 19041.1106) released June 9, 2020. Microsoft will release an update directly to the Windows Update Client to improve Windows Update reliability on Microsoft HoloLens that have not updated to this most recent OS Build.
- Updates an issue that prevents you from using some voice commands in Windows Mixed Reality when the default Windows language is Canadian or Australian English.
- Improves the reliability of the keywords used for voice assistants, including Cortana.
- Updates to improve security when using Internet Explorer and Microsoft Edge.
- Updates to improve security when Windows performs basic operations.
- Updates to improve security when using Microsoft Office products.
- Updates to improve security when using external devices (such as game controllers, printers, and web cameras) and input devices (such as a mouse, keyboard, or stylus).
- Improves security in Microsoft Xbox and the Microsoft Store.
- Updates for verifying usernames and passwords.
- Updates for storing and managing files.
- Optimizes the touch experience when you detach the keyboard.
Improvements and fixes
This security update includes quality improvements. Key changes include:
- Addresses an issue that prevents users from updating .msi files from a network folder.
- Addresses an issue that prevents you from using some voice commands in Windows Mixed Reality when the preferred Windows display language is English (Canada) or English (Australia).
- Improves the reliability of voice assistants that use Windows voice activation (Settings > Privacy > Voice Activation) for keywords.
- Improves the reliability of Cortana's voice activation when using the “Cortana” keyword on devices that support low-power keywords.
- Optimizes the touch experience and keeps the familiar desktop experience when you detach the keyboard.
- Addresses an issue in which the Deployment Image Servicing and Management (DISM.exe) tool might incorrectly report that damage is still present after using the command /restorehealth. This can occur even when the damage has been repaired.
- 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, Windows Silicon Platform, Microsoft Xbox, the Microsoft Store, Windows Cloud Infrastructure, Windows Fundamentals, Windows Management, Windows Authentication, Windows Cryptography, Microsoft HoloLens, Windows Virtualization, Windows Peripherals, Windows Storage and Filesystems, Windows File Server and Clustering, Windows Hybrid Storage Services, the Microsoft JET Database Engine, and the Windows Update Stack.
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.
Windows Update Improvements
Microsoft has released an update directly to the Windows Update client to improve reliability. Any device running Windows 10 configured to receive updates automatically from Windows Update, including Enterprise and Pro editions, will be offered the latest Windows 10 feature update based on device compatibility and Windows Update for Business deferral policy. This doesn't apply to long-term servicing editions.
Known issues in this update
|Some apps utilize the ImeMode property to control the Input Method Editor (IME) mode for individual text entry fields to increase typing efficiency. Some IMEs in Windows 10, version 2004 (the May 2020 Update) might have issues using the ImeMode property with certain apps. For example, the input mode will not switch automatically to Kanji or Hiragana.|| |
This issue is resolved in KB4565503.
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 KB4567523.|
|The Local Security Authority Subsystem Service (LSASS) file (lsass.exe) might fail on some devices with the error message, “A critical system process, C:\WINDOWS\system32\lsass.exe, failed with status code c0000008. The machine must now be restarted."||This issue is resolved in KB4565503.|
|When using some apps, such as Microsoft Excel, users of the Microsoft Input Method Editor (IME) for Chinese and Japanese might receive an error, or the app might stop responding or close when attempting to drag using the mouse.||For more information and workaround steps, please see KB4564002.|
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.
|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, version 1903 and laterClassification: Security Updates
For a list of the files that are provided in this update, download the file information for cumulative update 4557957.
Note Some files erroneously have “Not applicable” in the “File version” column of the CSV file. This might lead to false positives or false negatives when using some third-party scan detection tools to validate the build.