Windows 10 update KB4598242
First Patch Tuesday of 2021

Windows 10 update KB4598242 releases for version 20H2 and 2004

Windows 10 20H2, 2004, and older versions receive the first Patch Tuesday update of 2021, and here's all you need to know.

As part of the first Patch Tuesday rollout of 2021, Microsoft is now rolling out update KB4598242 for devices running Windows 10 20H2 and version 2004 to fix several problems.

The update KB4598242 bumps the version number to build 19041.746 and 19042.746 for versions 2004 and 20H2. According to the Microsoft documentation, this release addresses security vulnerability with HTTPS-based servers, security bypass with Printer Remote Procedure Call (RPC), and patches security wholes for many components.

In addition, the company is also pushing updates for older versions of Windows 10, including for versions 1909, 1903, 1809, 1803, 1703, 1607, and 1507.

Update KB4598242 for Windows 10 20H2 and 2004

Microsoft has announced KB4598242 on the Windows support site, and it is referred to as “January 12, 2021—KB4598242 (OS Builds 19041.746 and 19042.746).” If you are already running the Windows 10 October 2020 Update or May 2020 Update, this update will address these problems:

  • Fixes a security vulnerability issue with HTTPS-based intranet servers. 
  • Addresses a security bypass vulnerability in how the Printer Remote Procedure Call (RPC) binding handles authentication for the remote Winspool interface.
  • 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

You can download the updates to install them manually for version 20H2 and 2004 from the Microsoft Update Catalog website.

Update KB4565483 for Windows 10 1909

The update KB4565483 has been published on the Windows support site, and it is referred to as “January 12, 2021—KB4598229 (OS Build 18363.1316).” If you are still in the Windows 10 November 2019 Update, this update will address these issues:

  • Fixes a security vulnerability issue with HTTPS-based intranet servers. 
  • Addresses a security bypass vulnerability in how the Printer Remote Procedure Call (RPC) binding handles authentication for the remote Winspool interface.
  • Fixes an issue that might damage the file system of some devices and prevent them from starting up after running chkdsk /f.
  • Security updates to Windows App Platform and Frameworks, Microsoft Graphics Component, Windows Media, Windows Fundamentals, Windows Kernel, Windows Cryptography, Windows Virtualization, Windows Peripherals, and Windows Hybrid Storage Services.

Update KB4598230 for Windows 10 1809

Microsoft has also announced KB4598230 on the Windows support site, and it is referred to as “January 12, 2021—KB4598230 (OS Build 17763.1697).” If you have the Windows 10 October 2018 Update on your device, this update will address these issues:

  • Addresses a timing issue on print servers that might send print jobs to the wrong print queue.
  • Fixes a security vulnerability issue with HTTPS-based intranet servers.
  • Addresses a security bypass vulnerability in how the Printer Remote Procedure Call (RPC) binding handles authentication for the remote Winspool interface. 
  • Fixes a problem that might damage the file system of some devices and prevent them from starting up after running chkdsk /f.
  • Security updates to Windows App Platform and Frameworks, Microsoft Graphics Component, Windows Media, Windows Fundamentals, Windows Kernel, Windows Cryptography, Windows Virtualization, Windows Peripherals, and Windows Hybrid Storage Services.

Update for older versions of Windows 10

Windows 10 version 1803 has reached the end of support on November 12, 2019, but Microsoft has released update KB4598245 to fix several problems while bumping the version number to build 17134.1967.

In addition, the software giant has also ended support for Windows 10 version 1703 (Creators Update), but organizations with computers still running this release can now download KB4599208, which resolves several problems and ramps the version number to build 15063.2614.

The Windows 10 Anniversary Update (version 1607) is getting the update KB4598243 to fix many problems, even though the operating system is no longer available. The update also bumps the version number to build 14393.4169

Finally, the original release of Windows 10 is getting the update KB4598231, and the release increases the version number to 10240.18818.

Uninstall Windows 10 update KB4598242 to fix problems

If the KB4598242 update is causing issues on your device, you can always uninstall it to revert the changes with these steps:

  1. Open Start.

  2. Search for Command Prompt, right-click the top result, and select the Run as administrator option.

  3. Type the following command to view the update history and press Enter:

    wmic qfe list brief /format:table
  4. Check the Windows Update history of your device, and identify the update by its HotFixID and InstalledOn information.

  5. Type the following command to uninstall the update from your computer and press Enter:

    wusa /uninstall /kb:4598242
    Quick note: In the command, replace “4598242” for the KB number corresponding to the update you are trying to uninstall.
  6. Click the Yes button.

  7. Continue with the on-screen directions (if applicable).

Once you complete the steps, the recently installed update will be removed from your installation, fixing any issues resulting from the release.

If your computer doesn’t boot after installing KB4598242, you can remove the update from the Advanced startup environment using these steps.

Download January 2021 update for Windows 10

These updates are available immediately, and they will download and install automatically. However, you can always force the update from Settings Update & Security > Windows Update and clicking the Check for updates button.