Windows 10 KB4601319
Patch Tuesday

Windows 10 update KB4601319 releases for version 20H2 and 2004

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

As part of the February Patch Tuesday rollout, Microsoft is now making the update “KB4601319” available for devices on version 20H2 and version 2004, including those computers that are enrolled in the Beta and Release Preview Channels.

The update KB4601319 bumps the version number to build 19042.804 and 19041.804 for version 20H2 (October 2020 Update) and version 2004 (May 2020 Update). According to the announcement, this security update fixes the elevation of privileges, patches vulnerability running apps with the SYSTEM account, and security updates for many of the Windows 10 components. In addition, this cumulative update fixes a problem that may damage the file system.

Also, Microsoft is releasing updates for older versions of Windows 10, including for versions 1909, 1809, 1803, 1703, 1607, and 1507.

Update KB4601319 for Windows 10 20H2 and 2004

Microsoft has announced KB4601319 on the Windows support site. If you are already running the Windows 10 October 2020 Update or May 2020 Update, this update will address these problems:

  • Addresses a problem that might damage the file system of some devices and prevent them from starting up after running chkdsk /f.
  • Fixes a possible elevation of privilege vulnerability in the win32k component.
  • Addresses a security vulnerability by preventing applications that run as a SYSTEM account from printing to “FILE:” ports. To address this issue in the future, make sure your applications or services run as a specific user or service account.
  • Security updates to the Windows App Platform and Frameworks, Windows Apps, Windows Input and Composition, Windows Cloud Infrastructure, Windows Management, Windows Authentication, Windows Fundamentals, Windows Cryptography, Windows Virtualization, Windows Core Networking, and Windows Hybrid Cloud Networking.

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

Update KB4601315 for Windows 10 1909

The update KB4601315 has been published on the Windows support site, and it is referred to as “February 9, 2021—KB4601315 (OS Build 18363.1377).” If you are still in the Windows 10 November 2019 Update, this update will address these issues:

  • Improves security when using input devices such as a mouse, keyboard, or pen.
  • Addresses a possible elevation of privilege vulnerability in the win32k component.

Update KB4601345 for Windows 10 1809

Microsoft has also announced KB4601345 on the Windows support site, and it is referred to as “February 9, 2021—KB4601345 (OS Build 17763.1757).” If you have the Windows 10 October 2018 Update on your device, this update will address these issues:

  • Improves security when using input devices such as a mouse, keyboard, or pen.
  • Addresses a possible elevation of privilege vulnerability in the win32k component.

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 KB4601354 to fix several problems while bumping the version number to build 17134.2026.

In addition, the company has also ended support for Windows 10 version 1703 (Creators Update), but organizations with computers still running this release can now download KB4601330, which resolves several problems and ramps the version number to build 15063.2642.

The Windows 10 Anniversary Update (version 1607) is getting the update KB4601318 to resolve a slew of problems, even though the operating system is no longer available. The update also bumps the version number to build 14393.4225

Finally, the original release of Windows 10 is getting the update KB4601331, and the release increases the version number to 10240.18842.

Uninstall Windows 10 update KB4601319 to fix problems

To uninstall the KB4601319 update from your computer, use these steps:

  1. Open Start on Windows 10.

  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:4601319
    Quick note: In the command, replace “4601319” 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 KB4601319, you can remove the update from the Advanced startup environment using these steps.

Download February 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.