Windows Server 2022 Preview Update (April 25, 2022)

Windows[German]Microsoft has released an optional cumulative (preview) update for Windows Server 2022 on April 25, 2022 (D-Week), in addition to preview updates for Windows 10 20H2-21H2 and Windows 11. Below I provide an overview regarding these updates for Windows Server 2022.


It should be noted that this update is a so-called preview or preview update. These updates are optional and must be manually triggered for download and installation by default.

Preview Updates Windows Server 2022

The update history for Windows Server 2022 is available on this web page. The following preview updates have been published for Windows Server 2022.  

Update KB5012637 for Windows Server 2022

Cumulative Preview Update KB5012637 for Windows Server 2022 raises the OS build to 20348.681 and also mentions the fix for the 40 minutes startup delay for POS terminals. The bug has also been fixed in other Windows versions via preview update, though it's not clear to me if Windows Server 2022 is used in point-of-sale terminals. According to Microsoft, the preview update contains the following fixes:

  • New! Adds improvements for servicing the Secure Boot component of Windows.
  • Addresses an issue in which certain Point of Sale terminals experience occasional OS startup delays during restart of up to 40 minutes.
  • Addresses an issue that causes Internet Explorer to stop working when you copy and paste text using an Input Method Editor (IME).
  • 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 might cause Windows to stop working when you apply a Windows Defender Application Control (WDAC) policy that doesn't require a restart.
  • Addresses an issue that might fail to copy the security portion of a Group Policy to a machine.
  • Addresses an issue that causes the Key Distribution Center (KDC) code to incorrectly return the error message "KDC_ERR_TGT_REVOKED" during domain controller shutdown.
  • Addresses an issue that prevents the instantiation of the Microsoft RDP Client Control, version 11 and higher, inside a Microsoft Foundation Class (MFC) dialog.
  • Addresses an issue that might cause a Microsoft OneDrive file to lose focus after you rename it and press the Enter key.
  • Addresses an issue that fails to pass the Shift KeyUp event to an application when you use the Korean IME.
  • Optimizes the Active Directory Federation Services (AD FS) artifact database by deleting expired artifacts.
  • Addresses an issue that might occur when you use Netdom.exe or the Active Directory Domains and Trusts snap-in to list or modify name suffixes routing. These procedures might fail. The error message is, "Insufficient system resources exist to complete the requested service." This issue occurs after installing the January 2022 security update on the primary domain controller emulator (PDCe).
  • Addresses an issue that causes the primary domain controller (PDC) of the root domain to generate warning and error events in the System log. This issue occurs when the PDC incorrectly tries to scan outgoing-only trusts.
  • Addresses an issue that occurs when you map a network drive to a Server Message Block version 1 (SMBv1) share. After restarting the OS, you cannot access that network drive.
  • Addresses an issue that affects an SMB multichannel connection and might generate a 13A or C2 error.
  • Addresses an issue that causes virtual computer object (VCO) password settings failure on a distributed network name resource.
  • Addresses an issue that damages a pool when a Client-Side Caching (CSC) cleanup method fails to delete a resource that was created.
  • Addresses an issue that might cause the server to lock up because the nonpaged pool grows and uses up all memory. After a restart, the same issue occurs again when you try to repair the damage.
  • Reduces the overhead of resource contention in high input/output operations per second (IOPS) scenarios that have many threads contending on a single file.

The update is optional and is only offered if the administrator explicitly selects optional updates for installation in the settings page. The update can also be downloaded and installed from the Microsoft Update Catalog. The latest Servicing Stack Update (SSU) is integrated. Microsoft lists several known issues related to this update. Further details can be found in the support article in case of doubt

Similar articles:
Patchday: Windows 10 Updates (April 12, 2022)
Patchday: Windows 11/Server 2022 Updates (April 12, 2022)
Windows 7/Server 2008R2; Windows 8.1/Server 2012R2: Updates (April 12, 2022)
Windows 10 / Windows Server Preview Update KB5012636 (April 21, 2022)
Windows 10 / Windows Server (20H2-21H2) Preview Updates (April 25, 2022)
Windows 11 Preview Update KB5012643 (April 25, 2022)
Windows Server 2022 Preview Update (April 25, 2022)


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2 Responses to Windows Server 2022 Preview Update (April 25, 2022)

  1. Fabien G. says:


    KB5012637 still breaks RDCB role if you install it without any update after february (except KB5011258).
    But if you install KB5012637 after KB5012604 (replace KB5011497) and after a new install of RDS roles (always with KB5011258 before), RDCB don't break another time.

    For now, it looks like that we can't update without at least one new RDS installation.

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