Table of contents
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Release Date:

29/07/2021

Version:

OS Build 18363.1714

6/15/21
IMPORTANT 
This release includes the Flash Removal Package. Taking this update will remove Adobe Flash from the machine. For more information, see the Update on Adobe Flash Player End of Support.

5/11/21
REMINDER Windows 10, version 1909 reached end of service on May 11, 2021 for devices running the Home, Pro, Pro for Workstation, Nano Container, and Server SAC editions. After May 11, 2021, these devices will no longer receive monthly security and quality updates that contain protection from the latest security threats. To continue receiving security and quality updates, Microsoft recommends updating to the latest version of Windows 10

We will continue to service the following editions: Enterprise, Education, and IoT Enterprise.

11/19/20
For information about Windows update terminology, see the article about the types of Windows updates and the monthly quality update types. To view other notes and messages, see the Windows 10, version 1909 update history home page.

Note Follow @WindowsUpdate to find out when new content is published to the release information dashboard.

Highlights

  • Updates an issue that prevents gaming services from opening certain games for desktop users.

  • Updates an issue that prevents power plans and Game Mode from working as expected. This results in lower frame rates and reduced performance while gaming. 

  • Updates an issue that causes File Explorer to stop working after reaching 99% completion when you are deleting many files on a mapped network drive.  

  • Updates an issue that fails to detect that you are connected to the internet after you connect to a virtual private network (VPN). 

Improvements and fixes

This non-security update includes quality improvements. Key changes include:

  • Addresses an issue that prevents gaming services from opening certain games for desktop users.

  • Addresses an issue that prevents power plans and Game Mode from working as expected. This results in lower frame rates and reduced performance while gaming.

  • Addresses an issue that causes File Explorer to stop working after reaching 99% completion when you are deleting many files on a mapped network drive.

  • Addresses a timing issue in the Group Policy Registry Telemetry that causes Group Policy extension processing to fail.

  • Addresses an issue that repeatedly rebuilds the Windows Filtering Platform (WFP) filters. This issue occurs when a device is enrolled in a mobile device management (MDM) service and “MDMWinsOverGP” is set.

  • Addresses an issue with an MDM service that fails to correctly apply certain junk mail rules.

  • Addresses an issue that causes the enrollment of the Elliptic Curve Digital Signature Algorithm (ECDSA) certificate to fail with the error, “0x80090027 NTE_INVALID_PARAMETER”. This issue occurs when the Trusted Platform Module (TPM) provider (the Microsoft Software Key Storage Provider) stores the key.

  • Addresses an issue with auditing events 4624 and 5142 that display the wrong event template when Dutch is the display language.

  • Addresses an issue that causes System Integrity to leak memory.

  • Addresses an issue in which the Network Connectivity Status Indicator (NCSI) fails to detect internet connectivity after you connect to a virtual private network (VPN).

  • Addresses an issue with the App Readiness service that prevents users from signing in successfully.

  • Addresses a reliability issue that might generate stop error 0x51 (REGISTRY_ERROR). This issue might occur when applications use volatile registry keys excessively.

  • Addresses a rare issue that might degrade performance in applications that call Gdiplus.dll!GdipMeasureString in a tight loop with a new font on each call. This issue occurs after installing Windows updates released on and after February 2021.

  • Addresses an issue that always displays devices that RemoteFX USB redirects as "Remote Desktop Generic USB Device" instead of the actual device name.

  • Addresses an issue in which Set-RDSessionCollectionConfiguration does not set the camerastoredirect:s:value custom property.

  • Addresses a Local Security Authority Subsystem Service (LSASS) domain controller memory leak that is reported in Privileged Access Management (PAM) deployments. 

  • Addresses an issue that prevents the Windows Server service from starting if SrvComment is greater than 128 characters.

  • Addresses an issue that prevents access to files on a Server Message Block (SMB) share when you enable Access Enabled Enumeration (ABE).

  • Addresses an issue in the Windows Network File System (NFS) client that might prevent you from renaming a file after mounting an NFS share. This issue occurs if you rename the file using File Explorer, but does not occur if you rename the file using command line.

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

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

Microsoft is not currently aware of any issues with this update.

How to get this update

Before installing this update

Prerequisite:

You must install the July 13, 2021 servicing stack update (SSU) (KB5004748) or the latest SSU (KB5004314) before installing the latest cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing the LCU. 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 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

Go to Settings > Update & Security > Windows Update. In the Optional updates available area, you’ll find the link to download and install the update.

Windows Update for Business

No

None. These changes will be included in the next security update to this channel.

Microsoft Update Catalog

Yes

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Windows Server Update Services (WSUS)

No

You can import this update into WSUS manually. See the Microsoft Update Catalog for instructions.

File information

For a list of the files that are provided in this update, download the file information for cumulative update 5004293.  

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