Optional update KB5015878 has been released for Windows 10 versions 21H2, 21H1 and 20H2

Microsoft released An optional cumulative update for Windows 10 versions 21H2, 21H1, and 20H2, and Windows Server version 20H2. The update is distributed as KB5015878 and changes the system build number to 19044.1865, 19043.1865, and 19042.1865, respectively.

To install it, you need to go to “Windows Update”, check for updates, then open the “Advanced Options” -> “Optional Updates” section and select the update with the code KB5014668. You can also manually install the update, by downloading it from the Microsoft Update Catalog at this link.

Changes and fixes

• New! Added the ability to receive important notifications when Focus Assist is enabled. Recall that this mode is similar to the Do Not Disturb function, so that when it is running, pop-up notifications are not displayed.
• New! Restored Windows Autopilot deployment scenarios that were affected by hardware reuse security measures. This update removes the one-time use limit for self-deploying mode (SDM) and pre-provisioning (PP). In addition, the update restored the display of any User Principal Name (UPN) in user-driven mode (UDM) deployments for approved manufacturers.
• We fixed an issue that caused some docking stations to lose internet connectivity after resuming from sleep.
• Implemented improvements to the operating system update process.
• We fixed an issue that could result in crashes when playing consecutive videos in games that use DirectX 12 (DX12).
• We fixed an issue that caused some games to crash if they used the XAudio API to play sound effects.
• We fixed an issue affecting the height of the search box when using multiple monitors with different resolutions measured in dots per inch (DPI).
• We fixed an issue that prevented some sections of the troubleshooter from opening.