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MC364261: April 2022 Windows non-security preview “C” release available for all supported versions of Windows

The April 2022 non-security preview release, referred to as our “C” release, is now available for Windows 11 and all other supported versions of Windows. Information about the contents of this update is available from the release notes, which are accessible from the Windows 11 and Windows 10 update history pages. To learn more about the different types of monthly quality updates, see our Windows quality updates primer.

MC364261: April 2022 Windows non-security preview “C” release available for all supported versions of Windows

Improvements for Windows 11:

  • Addresses an issue that delays OS startup by approximately 40 minutes.
  • Addresses a memory leak issue that affects Windows systems that are in use 24 hours each day of the week.
  • Addresses an issue that affects the Dynamic Host Configuration Protocol (DHCP) option 119 (Domain Search Option) by preventing the use of the connection-specific DNS Suffix Search List.
  • Addresses an issue that affects the Title attribute in Microsoft Ege IE mode.
  • Addresses an issue that might cause video subtitles to be partially cut off.
  • Addresses an issue that incorrectly aligns video subtitles.
  • Addresses an issue that causes Kerberos authentication to fail, and the error is “0xc0030009 (RPC_NT_NULL_REF_POINTER)”. This occurs when a client machine attempts to use the Remote Desktop Protocol (RDP) to connect to another machine while Remote Credential Guard is enabled.
  • Addresses an issue that causes Windows to go into BitLocker recovery after a servicing update.
  • Adds improvements for servicing the Secure Boot component of Windows.
  • Displays the temperature on top of the weather icon on the taskbar.
  • Addresses an issue that prevents you from using the minimize, maximize, and close buttons on a maximized app window. This issue occurs because the Notification Center keeps the input focus.

For instructions on how to install this update for your operating system, see the KB for your OS listed below:

  • Windows 11 (original release): KB5012643
  • Windows 10, version 21H2: KB5011831
  • Windows 10, version 21H1: KB5011831
  • Windows 10, version 20H2, Windows Server, version 20H2: KB5011831
  • Windows 10, version 1809, Windows Server, version 1809, Windows Server 2019: KB5012636
  • Windows Server 2022: KB5012637

Message ID: MC364261
Created: 26 April 2022
Updated: 26 April 2022
Action required by: 25 April 2022
Platform: Windows Desktop, World tenant

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