Microsoft releases Windows Server Insider Preview build 18298

Today, Microsoft released Windows Server Insider Preview build 18298. It's only the second preview build from the 19H1 development branch, the first of which was released on November 20.

Just like last time, Microsoft published the changelog on the Tech Community blog, rather than the Windows Blog, which is where the release notes used to show up. Here's 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.

  • 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.

There are also some fixes and known issues. Here's what's fixed:

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).


Here are the 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

Windows Server 19H1 will likely arrive in the spring, and this is a Semi-Annual Channel (SAC) release. The last version had an SAC release, but it also came alongside Windows Server 2019, which was a Long-Term Servicing Channel (LTSC) release. The difference is that the SAC gets feature updates twice a year, and the LTSC gets 10 years of support.

You can download build 18298 from the Windows Insider website.

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