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Releasing Windows 10 Build 19042.746 (20H2) to Beta and Release Preview Channels


Hello Windows Insiders, today we’re releasing 20H2 Build 19042.746 (KB4598242) to the Beta and Release Preview Channels for those Insiders who are on 20H2 (Windows 10 October 2020 Update).

This security update includes quality improvements. Key changes include:

  • We fixed a security vulnerability issue with HTTPS-based intranet servers. After installing this update, HTTPS-based intranet servers cannot, by default, use a user proxy to detect updates. Scans using these servers will fail if you have not configured a system proxy on the clients. 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. This change does not affect customers who are using HTTP WSUS servers. For more information, see Changes to scans, improved security for Windows devices.
  • Addresses a security bypass vulnerability that exists in the way the Printer Remote Procedure Call (RPC) binding handles authentication for the remote Winspool interface. For more information, see KB4599464.
  • Security updates to Windows App Platform and Frameworks, Windows Media, Windows Fundamentals, Windows Cryptography, Windows Virtualization, Windows Peripherals, and Windows Hybrid Storage Services.

For more information about the resolved security vulnerabilities, please refer to the new Security Update Guide website.

Note for WSUS customers

We are releasing the LCU and SSU together again for this update in the pre-release category for WSUS customers. For all the details on this, see this blog post from Aria Carley. This builds off the progress to simplify on premises deployments of servicing stack updates she talked about back in September.

Thanks,
BLB



This post was written by Brandon LeBlanc and was first posted to Windows Blog



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