Hello Windows Insiders!

Today we are pleased to release a new Insider build of the Windows Server vNext Semi-Annual Channel release.

What’s New

In this preview build we are adding support for Network Policies using Tigera Calico for Windows Containers. The latest Tigera Calico for Windows bits are included in Tigera Essentials — for access to the latest release, contact Tigera by email at contact@tigera.io

We’re releasing the full set of 38 server language packs to Insiders for the first time. Use DISM or LPKSETUP commands to install on Windows Server core. Language packs will only install on a matching build.

or commands to install on Windows Server core. Language packs will only install on a matching build. We have new innovations in networking that we will announce in the early new year, please stay tuned.

The expiration date for this preview is July 5th, 2019.

Available Content

Windows Server vNext Semi-Annual Preview The Server Core Edition is available in the 18 supported Server languages in ISO format and in English only in VHDX format.

The Server Core Edition is available in the 18 supported Server languages in ISO format and in English only in VHDX format. Windows Server Core App Compatibility FoD Preview

Windows Server Language Packs

The following keys allow for unlimited activations:

Server Standard: V6N4W-86M3X-J77X3-JF6XW-D9PRV

Server Datacenter: B69WH-PRNHK-BXVK3-P9XF7-XD84W

This build will expire July 5th, 2019.

Symbols are available on the public symbol server – see Update on Microsoft’s Symbol Server blog post and Using the Microsoft Symbol Server. Matching Windows Server container images will be available via Docker Hub. For more information about Windows Server containers and Insider builds, click here.

How to Download

To obtain the Insider software downloads, registered Insiders may navigate to the Windows Server Insider Preview download page. If you have not yet registered as an Insider, see GETTING STARTED WITH SERVER on the Windows Insiders for Business portal.

We value your feedback!

Use your registered Windows 10 Insider device and use the Feedback Hub application. In the app, choose the Windows Server category and then the appropriate subcategory for your feedback. In the title of the Feedback, please indicate the build number you are providing feedback on in this format:

[Server #####] Title of my feedback

We also encourage you to visit the Windows Server Insiders space on the Microsoft Tech Communities forum to collaborate, share and learn from experts.

Bug Fixes

Bug# Description 18711227 We made changes to enable recent preview releases of the operating system to recognize Linear Tape-Open (LTO) devices. 19304688 We resolved an issue that prevented OS events that are sent over the VMBus to a virtual machine (VM) guest from reaching the targeted guest due to an incorrect message ID. 19344847 We resolved an issue that could cause a printer to be undiscoverable when using Mopria over IPv4, due to the URL for the printer being invalid when constructed with an IPv6 address. 19099039 We fixed an issue that could prevent an application that uses Windows Presentation Foundation (WPF) and .NET Framework version 4 from loading in Windows PE (WinPE) due to BCP47 Language Classes (BCP47Langs.dll) being unavailable. 19325028 We fixed the following issue: On a system that is running a preview release of the operating system, Get-ADGroupMember might fail to return the members of an Active Directory group, instead producing an error message about the timeout being exceeded. 19421901, 19549384 We fixed the following issue: On some systems, the PIN for the Trusted Platform Module (TPM) does not work correctly after the system has been upgraded to a preview release of the operating system. 19581555 We fixed the following issue: An opportunistic lock by Advanced Threat Protection may prevent writing the base image for a container. 19188870 We fixed the following issue: Activation keys for preview releases are not correctly activating Server Core operating systems from the Semi-Annual Channel (SAC). 19413235 We fixed the following issue: On a system that is running a recent preview release of the operating system, Hyper-V may experience a bug check error: WHEA_UNCORRECTABLE_ERROR (0x124).

Known Issues

Bug# Description 18850279 Virtual machine runtime state (VMRS) files may fail to load. An affected system may report a failure in looking up or receiving the VM from the source host due to the data being invalid (0x8007000d). 18941473 Self-service users cannot install Feature on Demand (FOD) packages and Language Packs for Windows Server Update Service (WSUS), System Center Configuration Manager (SCCM), and Autopilot scenarios. 18814123 A container host may become unresponsive due to a deadlock when attempting to mount a volume. On an affected system, Docker hangs on all commands. 18428421, 18034699 The operating system has an unnecessary utility account for Windows Defender Application Guard. 18314155 When a Windows Defender Application Guard container crashes, the resulting type of dump may be unexpected. 19765417 Server FODs are not retained after in-place or Build-to-Build upgrade

Terms of Use

This is pre-release software – it is provided for use “as-is” and is not supported in production environments. Users are responsible for installing any updates made available from Windows Update. All pre-release software made available to you via the Windows Server Insider program are governed by the Insider Terms of Use.

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