June 11, 2019 - KB4503290 (Security-only update)
Applies to: Windows 8.1, Windows Server 2012 R2
Improvements and fixes
This security update includes quality improvements. Key changes include:
For more information about the resolved security vulnerabilities, please refer to the Security Update Guide.
- Addresses an issue that may prevent the Preboot Execution Environment (PXE) from starting a device from a Windows Deployment Services (WDS) server configured to use Variable Window Extension. This may cause the connection to the WDS server to terminate prematurely while downloading the image. This issue does not affect clients or devices that are not using Variable Window Extension.
- Addresses a security vulnerability by intentionally preventing connections between Windows and Bluetooth devices that are not secure and use well-known keys to encrypt connections, including security fobs. If BTHUSB Event 22 in the Event Viewer states, “Your Bluetooth device attempted to establish a debug connection….”, then your system is affected. Contact your Bluetooth device manufacturer to determine if a device update exists. For more information, see CVE-2019-2102 and KB4507623.
- Security updates to Windows App Platform and Frameworks, Windows Input and Composition, Windows Shell, Windows Server, Windows Authentication, Windows Datacenter Networking, Windows Storage and Filesystems, Windows Virtualization, Internet Information Services, and the Microsoft JET Database Engine.
Known issues in this update
[UPDATED 6-20]
How to get this update
This update is now available for installation through WSUS.
To get the standalone package for this update, go to the Microsoft Update Catalog website.
Source: https://support.microsoft.com/en-us/help/4503290
Direct download links for KB4503290 MSU file from Microsoft Update Catalog:
Download KB4503290 MSU for Windows 8.1 32-bit (x86) - 33.6 MBDownload KB4503290 MSU for Windows 8.1 64-bit (x64) - 57.1 MB
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