Reminder: March 12 and April 9 will be the last two Delta updates for Windows 10, version 1709. Security and quality updates will continue to be available via the express and full cumulative update packages. For more information on this change please visit our blog.
Reminder: Windows 10, version 1709, will reach end of service on April 9, 2019 for devices running Windows 10 Home, Pro, Pro for Workstation, and IoT Core editions. 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.
IMPORTANT: Windows 10 Enterprise, Education, and IoT Enterprise editions will continue to receive servicing for 12 months at no cost per the lifecycle announcement on October 2018.
July 19, 2019 - IMPORTANT: Beginning with the July 2019 updates, Active Directory domain controllers will intentionally block unconstrained delegation across forest, external, and quarantined trusts. Authentication requests for services that use unconstrained delegation over the listed trust types will fail when you request new tickets. Administrators should reconfigure the affected services to use resource-based constrained delegation. For more information, see KB4490425.
- Updates an issue with BitLocker encryption recovery mode.
Updates to improve security when using Internet Explorer, Microsoft Edge, wireless technologies, and Microsoft Office products.
Improvements and fixes
This update includes quality improvements. Key changes include:
- Provides protections against a variant (CVE-2019-1125) of the Spectre Variant 1 speculative execution side channel vulnerability.
- Addresses an issue that may cause BitLocker to go into recovery mode if BitLocker is being provisioned at the same time as updates are being installed.
- Security updates to Windows Wireless Networking, Windows Server, Microsoft Scripting Engine, Windows Storage and Filesystems, Microsoft Graphics Component, Internet Explorer, Windows Input and Composition, Windows Virtualization, Windows App Platform and Frameworks, Windows Fundamentals, Windows Kernel, Microsoft Edge, and Windows Cryptography.
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
|Certain operations, such as rename, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, “STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)”. This occurs when you perform the operation on a CSV owner node from a process that doesn’t have administrator privilege.|| |
Do one of the following:
After installing this update, opening or using the Window-Eyes screen reader app may result in an error and some features may not function as expected.Note Users who have already migrated from Window-Eyes to Freedom Scientific's other screen reader, JAWS, should not be affected by this issue.
|This issue is resolved in KB4507465.|
|Devices that start up using Preboot Execution Environment (PXE) images from Windows Deployment Services (WDS) or System Center Configuration Manager (SCCM) may fail to start with the error "Status: 0xc0000001, Info: A required device isn't connected or can't be accessed" after installing this update on a WDS server.|| |
For mitigation instructions, see KB4512816.
We are working on a resolution and will provide an update in an upcoming release.
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 more information, see Servicing stack updates.
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 synchronize with WSUS if you configure Products and Classifications as follows:
Product: Windows 10Classification: Security Updates
For a list of the files that are provided in this update, download the file information for cumulative update 4507455 .