Windows Server 2022 Preview Update KB5016693 (August 16, 2022)

Windows[German]Microsoft has released an optional cumulative (preview) update KB5015879 for Windows Server 2022 as of August 16, 2022 (C-Week). 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 website. The following preview updates have been published for Windows Server 2022. 

Preview updates Windows Server 2022

Cumulative Preview Update KB5016693 for Windows Server 2022 raises the OS build to 20348.859. According to Microsoft, the preview update contains the following fixes:

  • New! Enhances Microsoft Defender for Endpoint's ability to identify and intercept ransomware and advanced attacks.

  • New! Compresses a file regardless of its size if you have configured Server Message Block (SMB) Compression.


  • New! Improves storage replication that occurs over low bandwidth or congested wide area networks (WAN).

  • Addresses an issue that prevents the Startup Task API from working as expected for certain apps.

  • Addresses an issue that causes Kerberos authentication to fail. The error is 0xc000009a (STATUS_INSUFFICIENT_RESOURCES "Insufficient system resources exist to complete the API"). This occurs when a client uses the Remote Desktop Protocol (RDP) to connect to a device that has enabled Remote Credential Guard.

  • Addresses an issue that causes ServerAssignedConfigurations to be null in a few full configuration scenarios.

  • Addresses an issue that prevents a private virtual LAN (PVLAN) from providing tenant and virtual machine (VM) isolation.

  • Addresses an issue that delays a client's acquisition of the Internet Protocol version 6 (IPv6) address for extended periods in an IPv6 environment.

  • Addresses a known issue that causes Microsoft Edge to stop responding when you use IE mode. This issue also prevents you from interacting with a dialog.

  • Addresses an issue that might generate error 0x1E when you shut down or restart a device.

  • Addresses an issue that affects the installation of Microsoft Store apps when you have enabled Control-flow Enforcement.

  • Addresses an issue that prevents virtualized App-V Microsoft Office applications from opening or causes them to stop working.

  • Addresses an issue that might cause the deployment of the Windows Hello for Business certificate to fail in certain circumstances after you reset a device.

  • Addresses an issue that degrades BitLocker performance.

  • Addresses an issue that might prevent Windows from taking ownership of a Trusted Platform Module (TPM) device.

  • Addresses an issue that might cause a Windows device that is using BitLocker to stop working.

  • Addresses an issue that causes the Resultant Set of Policy tool (Rsop.msc) to stop working when it processes 1,000 or more "File System" security settings.

  • Addresses an issue that might cause Remote Desktop Session licensing to display a 60-minute disconnection warning after reconnecting.

  • Addresses an issue that causes the Settings app to stop working on server domain controllers (DCs) when accessing the Privacy > Activity history page.

  • Addresses an issue that prevents devices from receiving an offer from Windows Update for the same extension driver when that extension driver is already installed without the base driver.

  • Addresses a race condition that causes the Local Security Authority Subsystem Service (LSASS) to stop working on Active Directory domain controllers. This issue occurs when LSASS processes simultaneous Lightweight Directory Access Protocol (LDAP) over Transport Layer Security (TLS) requests that fail to decrypt. The exception code is 0xc0000409 (STATUS_STACK_BUFFER_OVERRUN).

  • Addresses an issue that affects a lookup for a nonexistent security ID (SID) from the local domain using read-only domain controller (RODC). The lookup unexpectedly returns the STATUS_TRUSTED_DOMAIN_FAILURE error instead of STATUS_NONE_MAPPED or STATUS_SOME_MAPPED.

  • Addresses an issue that affects input and output in the Storport driver and might cause your system to stop responding.

Among other things, a Bitlocker problem that affects the performance is corrected. And the TPM has been improved. Whether this fixes problems with the Bitlocker key, caused by KB5012170, is not lear to me – I assume that this will not be the case. 

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 a known issue related to this update. Further details can be found in the support article in case of doubt.

Similar article:
Microsoft Office Updates (August 2, 2022)
Microsoft Security Update Summary (August 9, 2022)
Patchday: Windows 10-Updates (August 9, 2022)
Patchday: Windows 11/Server 2022-Updates (August 9, 2022)
Windows 7/Server 2008R2; Windows 8.1/Server 2012R2: Updates (August 9, 2022)
Patchday: Microsoft Office Updates (August 9, 2022)

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