Microsoft releases Windows 10 builds 19042.867, 18363.1440 - here's what's new

Windows 10 logo with a PC running the OS next to it

It's Patch Tuesday, and you know what that means. Pretty much every supported Microsoft product is getting an update today, and that includes most versions of Windows 10. If you're a regular consumer, you're supported for version 1909 and above, but other SKUs are supported in specific circumstances.

If you're on Windows 10 version 20H2 or 2004, you're going to get KB5000802, bringing the build number to 19042.867 or 19041.867, respectively. You'll also get this update if you're a Windows Insider on the Beta or Release Preview channel. You can manually download it here, and these are the highlights:

  • Updates to improve security when Windows performs basic operations.
  • Updates to improve security when using Microsoft Office products.
  • Updates security for the Windows user interface.

Here's the full list of fixes:

  • Addresses an elevation of privilege security vulnerability documented in CVE-2021-1640 related to print jobs submitted to “FILE:” ports. After installing Windows updates from March 9, 2021 and later, print jobs that are in a pending state before restarting the print spooler service or restarting the OS will remain in an error state. Manually delete the affected print jobs and resubmit them to the print queue when the print spooler service is online.
  • Security updates to the Windows Shell, Windows Fundamentals, Windows Management, Windows Apps, Windows User Account Control (UAC), Windows Virtualization, the Windows Kernel, the Microsoft Graphics Component, Internet Explorer, Microsoft Edge Legacy, and Windows Media.

This one also has a couple of known issues to be aware of:

Symptom Workaround

System and user certificates might be lost when updating a device from Windows 10, version 1809 or later to a later version of Windows 10. Devices will only be impacted if they have already installed any Latest cumulative update (LCU) released September 16, 2020 or later and then proceed to update to a later version of Windows 10 from media or an installation source which does not have an LCU released October 13, 2020 or later integrated. This primarily happens when managed devices are updated using outdated bundles or media through an update management tool such as Windows Server Update Services (WSUS) or Microsoft Endpoint Configuration Manager. This might also happen when using outdated physical media or ISO images that do not have the latest updates integrated.

Note Devices using Windows Update for Business or that connect directly to Windows Update are not impacted. Any device connecting to Windows Update should always receive the latest versions of the feature update, including the latest LCU, without any extra steps.

If you have already encountered this issue on your device, you can mitigate it within the uninstall window by going back to your previous version of Windows using the instructions here. The uninstall window might be 10 or 30 days depending on the configuration of your environment and the version you’re updating to. You will then need to update to the later version of Windows 10 after the issue is resolved in your environment. Note Within the uninstall window, you can increase the number of days you have to go back to your previous version of Windows 10 by using the DISM command /Set-OSUninstallWindow. You must make this change before the default uninstall window has lapsed. For more information, see DISM operating system uninstall command-line options.

We are working on a resolution and will provide updated bundles and refreshed media in the coming weeks.

If you're still on Windows 10 version 1909, you're going to get KB5000808, bringing the build number to 18363.1440. You can manually download it here, and these are the highlights:

  • Updates security for the Windows user interface.
  • Updates to improve security when Windows performs basic operations.
  • Updates to improve security when using Microsoft Office products.

Here's the full list of fixes:

  • Addresses an elevation of privilege security vulnerability documented in CVE-2021-1640 related to print jobs submitted to “FILE:” ports. After installing Windows updates from March 9, 2021 and later, print jobs that are in a pending state before restarting the print spooler service or restarting the OS will remain in an error state. Manually delete the affected print jobs and resubmit them to the print queue when the print spooler service is online.
  • Security updates to the Windows Shell, Windows Fundamentals, Windows Management, Windows Apps, Windows User Account Control (UAC), Windows Core Networking, Windows Hybrid Cloud Networking, Windows Virtualization, the Windows Kernel, the Microsoft Graphics Component, Internet Explorer, Microsoft Edge Legacy, and Windows Media.

This one also has a couple of known issues to be aware of:

Symptom Workaround

System and user certificates might be lost when updating a device from Windows 10, version 1809 or later to a later version of Windows 10. Devices will only be impacted if they have already installed any Latest cumulative update (LCU) released September 16, 2020 or later and then proceed to update to a later version of Windows 10 from media or an installation source which does not have an LCU released October 13, 2020 or later integrated. This primarily happens when managed devices are updated using outdated bundles or media through an update management tool such as Windows Server Update Services (WSUS) or Microsoft Endpoint Configuration Manager. This might also happen when using outdated physical media or ISO images that do not have the latest updates integrated.

Note Devices using Windows Update for Business or that connect directly to Windows Update are not impacted. Any device connecting to Windows Update should always receive the latest versions of the feature update, including the latest LCU, without any extra steps.

If you have already encountered this issue on your device, you can mitigate it within the uninstall window by going back to your previous version of Windows using the instructions here. The uninstall window might be 10 or 30 days depending on the configuration of your environment and the version you’re updating to. You will then need to update to the later version of Windows 10 after the issue is resolved in your environment. Note Within the uninstall window, you can increase the number of days you have to go back to your previous version of Windows 10 by using the DISM command /Set-OSUninstallWindow. You must make this change before the default uninstall window has lapsed. For more information, see DISM operating system uninstall command-line options.

We are working on a resolution and will provide updated bundles and refreshed media in the coming weeks.

Finally, here are the updates available for versions that aren't supported for consumers, but are supported under different scenarios.

Version KB Build Download Support
1809

KB5000822

17763.1817 Update Catalog Enterprise and Education SKUs
1803

KB5000809

17134.2087 Update Catalog
1703

KB5000812

15063.2679 Update Catalog Surface Hub only
1607

KB5000803

14393.4283 Update Catalog Long-Term Servicing Branch
1507

KB5000807

10240.18874 Update Catalog


As usual, these are mandatory updates. That means that if you don't go and install them through Windows Update now, they'll be installed automatically at some point.

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