Microsoft has released new insider preview builds of Windows 10, Windows Admin Center, and Windows Server 2019:

Windows 10 Insider Preview Build 17738
Windows Admin Center Preview 1808
Windows Server 2019 Insider Preview Build 17733

Windows 10 Insider Preview Build 17738

Today, we are releasing Windows 10 Insider Preview Build 17738 (RS5) to Windows Insiders in the Fast ring.

General changes, improvements, and fixes for PC
We fixed an issue where on Windows 10 in S Mode, launching Office in the Store might fail to launch with an error about a .dll not being designed to run on Windows.
We fixed an issue where downloading a big file in Microsoft Edge would stop at the 4gb mark.
We fixed an issue where clicking the “more” button in Microsoft Edge’s inline definition pop up when reading in recent flights would open a blank pane.
We fixed an issue where items in Microsoft Edge’s Settings and More menu would become truncated when the option to increase text size was enabled in Settings.
We fixed an issue where using Find on page in Microsoft Edge didn’t highlight/select the current instance of the result.
We fixed an issue where after resetting Microsoft Edge saved favorites would get stuck showing a star next to the favorite name rather than populating the website’s favicon (if available).
We fixed an issue where text copied from certain websites in Microsoft Edge couldn’t be pasted into other UWP apps.
We fixed an issue impacting Teams resulting all unsent typed text disappearing following the completion of an emoji composition (for example ???? being turned into a smiley).
We fixed an issue from recent flights where hiberfil.sys would unexpectedly reappear after upgrading even if it had been disabled.
We fixed an issue that was highly impacting Start performance and reliability in the last few flights.
We’ve made some adjustments to improve the time it takes to render the Task Manager window on launch.
We fixed an issue that could result in the left side of the Microsoft Store’s My Library section becoming unexpectedly blurry until moused over.
We fixed a recent issue resulting in an increase in the amount of time taken to open large files in Notepad when word wrap was enabled.
We fixed an issue where after setting a pin and removing it, the option to setup a pin from the lock screen could get stuck as the default login method, rather than the login screen remembering your preferred login method.
We fixed an issue resulting in WSL’s tar and curl commands not working on x86 devices.
We fixed an issue resulting in text prediction and shapewriting not working when typing in Russian using the touch keyboard.

Read full article @ Windows Team Blog

Windows Admin Center Preview 1808

Thank you for your continued interest in the Windows Admin Center insider preview! If you are new to the preview, check out the previous posts for the 1806 and 1807 releases.

Release Summary
Much of the work in this release was under the hood – we are implementing new infrastructure to support future scenarios and improving the experience for the Azure Site Recovery and Azure Update Management hybrid scenarios.

Server settings such as environment variables, remote desktop and RBAC settings are now available as a standalone tool at the bottom of the tool list in the Server Manager solution. Hyper-V host settings are also available on standalone servers and clusters with Hyper-V enabled. The Hyper-V host settings on a cluster allows you to change configurations across all cluster nodes at once!

In Virtual Machines, a new security settings section has been added to the individual VM settings.

Read full article @ Windows Team Blog

Windows Server 2019 Insider Preview Build 17733

Today we are pleased to release a new build of the Windows Server vNext Long-Term Servicing Channel (LTSC) release that contains both the Desktop Experience and Server Core, as well as a new build of the next Windows Server Semi-Annual Channel release, Microsoft Hyper-V Server and Windows Admin Center 1808.

In each preview release, there are two major areas that we would like you to try out:

In-place OS Upgrade (from Windows Server 2012 R2, Windows Server 2016 or a previous preview build). Build-to-Build upgrade is also supported.

Application compatibility – please let us know if any server roles or applications stops working or fails to function as it used to.

Read full article @ Windows Team Blog