Windows Server 2025 build 26040

10.0.26040.1000.rs_prerelease.240122-1157
Build of Windows Server 2025
Screenshot
OS familyWindows 11 (NT 10.0)
Version number10.0
Build number26040
Build revision1000
ArchitectureAMD64
Build labrs_prerelease
Compiled on2024-01-22
Expiration date
Timebomb2024-09-15 (+237 days)
About dialog
26040-server-winver.png
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Windows Server 2025 build 26040 is an Insider Preview build of Windows Server 2025. It was released to Windows Insiders on 26 January 2024, along with its client counterpart. It is also the first build to use the new setup assistant by default when booted off from the installation media.

Editions and keys[edit | edit source]

Edition / SKU Key
Standard Server MFY9F-XBN2F-TYFMP-CCV49-RMYVH
Datacenter Server 2KNJJ-33Y9H-2GXGX-KMQWH-G6H67
Datacenter Azure Edition N3FPV-KQP4R-4M6H6-7Q8TK-HYMDX

New features and changes[edit | edit source]

Settings[edit | edit source]

Server builds can now be flighted to members of the Windows Server Insider Program. As part of this change, the Windows Update > Windows Insider Program page, initially implemented in build 26010, is now functional.

Miscellaneous[edit | edit source]

  • The "Windows Server 2022" branding has been changed to "Windows Server 2025".
  • Supports for listening on an alternative network port for SMB over QUIC instead of hardcoded default has been implemented into SMB server.[1]

Bugs and quirks[edit | edit source]

  • The label name of this build in Windows Update incorrectly references "Windows 11" even though it was the server version.
  • Moving and clicking the mouse for the first time may cause overlapping rectangle voids in WinPE and WinRE. To bypass this issue, use keyboard inputs only.
  • Applying the WinPE-Powershell optional component may not properly install Powershell in WinPE.
  • The Feedback Hub app may not work properly due to known issues.
  • Archiving eventlogs with wevtutil al command may cause the Windows Event Log service to crash, and the archive operation to fail.
  • Updating from Windows Server 2019 or Windows Server 2022 will not work due to the intermittent upgrade failures that introduced in this build.
  • Installing this build with Secure Launch/DRTM code path enabled will not work due to unknown reason.

References[edit | edit source]

  1. ↑ Pyle, Ned. SMB alternative ports now supported in Windows Insiders, Storage at Microsoft. 8 November 2023. Retrieved 27 January 2024.

External links[edit | edit source]

Retrieved from "https://betawiki.net/index.php?title=Windows_Server_2025_build_26040&oldid=351938"