Windows Server 2025 build 25997.1000

10.0.25997.1000.rs_prerelease.231110-1241
Build of Windows Server 2025
Screenshot
OS familyWindows 11 (NT 10.0)
Version number10.0
Build number25997
Build revision1000
ArchitectureAMD64
Build labrs_prerelease
Compiled on2023-11-10
Expiration date
Timebomb2024-09-15 (+310 days)
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Windows Server 2025 build 25997.1000 is an Insider Preview build of Windows Server 2025. It was released to Windows Insiders on 15 November 2023, along with its client counterpart.

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]

  • The SMB over QUIC server feature, previously only available in the Datacenter Azure Edition SKU, is also available in the Standard Server and Datacenter Server SKUs.
  • Starting from this build, all firewall rules in the "File and Printer Sharing (Restrictive)" group will be automatically configured when creating an SMB share, which no longer contains inbound NetBIOS ports 137-139.[1]
  • Support for specifying exception lists for NTLM usage has been implemented to the SMB NTLM blocking feature.[2]
  • Support for connecting to an SMB server over TCP, QUIC, or RDMA using alternative network ports to the hardcoded defaults has been implemented to the SMB client.[3]
  • Support for using certificates with subject alternative names has been implemented to the SMB over QUIC client access control feature.[4]

Bugs and quirks[edit | edit source]

Archiving eventlogs with wevtutil al command may cause the Windows Event Log service to crash, and the archive operation to fail.

Gallery[edit | edit source]

References[edit | edit source]

  1. Pyle, Ned. SMB firewall rule changes in Windows Insider, Storage at Microsoft. 8 November 2023.
  2. Pyle, Ned. SMB NTLM blocking now supported in Windows Insider, Storage at Microsoft. 13 September 2023.
  3. Pyle, Ned. SMB alternative ports now supported in Windows Insiders, Storage at Microsoft. 8 November 2023.
  4. Pyle, Ned. SMB over QUIC client access control now supported in Windows Insider, Storage at Microsoft. 18 October 2023.

External links[edit | edit source]