Microsoft has released an update directly to the Windows Update client to improve reliability.

If you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.įor more information about the resolved security vulnerabilities, please refer to the new Security Update Guide website. Security updates to Windows App Platform and Frameworks, Windows Media, Windows Fundamentals, Windows Kernel, Windows Cryptography, Windows Virtualization, Windows Peripherals, and Windows Hybrid Storage Services. This change does not affect customers who are using HTTP WSUS servers. For more information, see Changes to scans, improved security for Windows devices.Īddresses a security bypass vulnerability that exists in the way the Printer Remote Procedure Call (RPC) binding handles authentication for the remote Winspool interface. If you must use a user proxy, you must configure the behavior using the policy “Allow user proxy to be used as a fallback if detection using system proxy fails.” To ensure the highest levels of security, also use Windows Server Update Services (WSUS) Transport Layer Security (TLS) certificate pinning on all devices. Scans using these servers will fail if you have not configured a system proxy on the clients. After installing this update, HTTPS-based intranet servers cannot, by default, use a user proxy to detect updates. Key changes include:Īddresses a security vulnerability issue with HTTPS-based intranet servers.

This security update includes quality improvements.

Note This release also contains updates for Microsoft HoloLens (OS Build 19041.1134) released January 13, 2021. 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.

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