Microsoft have released the first Windows Insider preview build of the next release Windows Server. Build 17035 is the first preview build of the Windows Server release and is available as an ISO or a VHDX image for mounting on virtual server.

Here are the changes and known issues:

What’s New in Build 17035 for Windows Server

Storage Spaces Direct (S2D) is enabled. Storage Spaces Direct is the foundation of our hyper-converged solution and we’re continuing to evolve it. In this preview build we not only brought it back, but we’re adding some new and important updates to it – such as support for Data Deduplication, a commonly requested feature for Storage Spaces Direct and ReFS. Starting with this build, Data Deduplication will reduce the data footprint by up to 50%.

Developers can now use localhost or loopback (127.0.0.1) to access services running in containers on the host

Known issues with Windows Server build 17035

[NEW] The base filtering engine (BFE) service may fail to start, which prevents the Windows Defender firewall (MpsSvc service) from starting.

A system crash may occur because of a kernel security check failure (bug check 0x139) from a corrupt list entry in a deferred free pool.

An application may crash because of a heap entry corruption error (0xC0000374) in the health attestation configuration service provider (CSP) library (Hascsp.dll).

Testing of the Windows core may fail because of a timeout while attempting to load the test libraries.

Head over to the download page to get started.

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