KB5015807 Security Update Windows 10 21H2, 21H1 & 20H2

Windows 10 users receive KB5015807, a new security update released by Microsoft on Patch Tuesday. The cumulative update bumps the Windows 10 21H2, 21H1, and Windows Server 20H2 OS builds to 19042.1826, 19043.1826, and 19044.1826, respectively. Windows Update can automatically download security updates. Additionally, you can also download them from Windows Update, or WSUS can deploy them via update management services.

KB5015807 Changelog

These are the problems it resolves:

  • This fix addresses an issue in transcript logs that resulted in the PowerShell command output being redirected. This leads to the loss of the decrypted password.

How to get KB5015807 Update

You may download this patch update on your computer using any of the following methods ;

1] Through the Windows Update

You must perform the following steps in order to download and install KB5015807.

  • Right-click on Start and select the Settings option.
  • From the left pane, select the Windows Update tab.
  • Click Check for Updates on the right side of the page.
  • This will start the downloading procedure for the update.
  • After downloading, install the update and then restart your computer.

2] Microsoft Update Catalog

If the automatic search fails or you cannot locate the pending patch, you can manually search the Microsoft Update Catalog. In order to do so, follow these steps:

  • Visit Microsoft’s Update catalog.
  • Type KB5015807 into the text box and click Enter to open the updates list.
  • Select the system architecture that works best for you (x86, ARM64, x64) and click on the Download button.
  • Click the link on top to download it.
  • Then right-click on the “.MSU” file and select Install.


The patch update will be installed automatically on your computer if you have already configured the product for Windows 11 and classified it as “Security updates“. You don’t need to do anything.

Tip: If you are facing update, activation, or driver issues on your Windows PC, try RESTORO PC Repair Tool. This software will scan your device for potential issues and resolve them automatically.

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