Microsoft has released the latest Windows Server preview build for members of the Windows Server Insider Program. The new build number is 26052 and adds one more known issue to the release notes.
Microsoft has announced the availability of Windows Server Preview Build 26040, the first preview of what has now been confirmed to be called Windows Server 2025.
Microsoft has released the first Windows Server preview build of 2024. The new build 26040 supports the new Server Flighting update feature and branding has been updated to Windows Server 2025.