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Screenshot of higher IOPS when running Native NVMe stack on Windows Server 2025.
Windows Server News and Best Practices
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Announcing Native NVMe in Windows Server 2025: Ushering in a New Era of Storage Performance

Yash_Shekar's avatar
Yash_Shekar
Icon for Microsoft rankMicrosoft
Dec 15, 2025

Native NVMe support in Windows Server 2025 is a leap forward in storage innovation that will redefine what’s possible for your most demanding workloads. Enable Native NVMe today using a registry key after applying October’s latest cumulative update for WS2025!

We’re thrilled to announce the arrival of Native NVMe support in Windows Server 2025—a leap forward in storage innovation that will redefine what’s possible for your most demanding workloads. Modern ...
Updated Dec 15, 2025
Version 1.0
NVME SSD
storage
windows server
RHCITC's avatar
RHCITC
Copper Contributor
Dec 23, 2025

With these additional features enabled, I mange to get it running on Windows 11 (disk showing up under Storage Disks as NVMe) - but I can't measure any improvement, in fact I only get worse numbers after the change.
The article only talks about WS2025, do any of you know if it actually is suppose to work on clients?

Additional keys for Windows 11 - but I don't see any performance gains, so I might not work on clients at all - do you see a difference?

reg add HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Policies\Microsoft\FeatureManagement\Overrides /v 1853569164 /t REG_DWORD /d 1 /f
reg add HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Policies\Microsoft\FeatureManagement\Overrides /v 156965516 /t REG_DWORD /d 1 /f
reg add HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Policies\Microsoft\FeatureManagement\Overrides /v 735209102 /t REG_DWORD /d 1 /f

  • MSP_Knuckle_Dragger's avatar
    MSP_Knuckle_Dragger
    Copper Contributor
    Dec 23, 2025

    On one Win11 25H2 system, I saw 12% higher max read speeds, 2% higher max write speeds, 167% higher IOPS between 512b and 8KB IOs.  138% more performance between 512kb-8MB reads & writes.  It's a 4-year old OEM Samsung NVMe.  While these results won't be representative of all hardware out there, the new nvme driver improved responsiveness and reduced time to login to desktop.  Overall the results were improved across the board, with more consistent performance across a broad range of file sizes.  This driver hits the performance limitations of the NVMe controller.  

    • RHC's avatar
      RHC
      Copper Contributor
      Dec 24, 2025

      Did you enable it by adding the 4 reg keys? Or did you do something else? 

  • hp18568's avatar
    hp18568
    Copper Contributor
    Dec 23, 2025

    I run 23H2, and I don't see that any of the 4 registry keys are having the desired effect.

     

  • Squall_Leonhart's avatar
    Squall_Leonhart
    Copper Contributor
    Dec 23, 2025

    You need to register the class id's in these locations or safemode will be broken

     

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\{75416E63-5912-4DFA-AE8F-3EFACCAFFB14}
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\{75416E63-5912-4DFA-AE8F-3EFACCAFFB14}

    They aren't present on server either......

    • user5242's avatar
      user5242
      Occasional Reader
      Dec 29, 2025

      Thanks for the info.

      If i can ask a more explict explanation, class id of what ? where to be found ? how to register it ?

    • Karl-WE's avatar
      Karl-WE
      MVP
      Dec 24, 2025

      Is this true for Windows Server as well? Anyone tested WinRE after the change? 

      I can check that, just looking for other references. 

    • MSP_Knuckle_Dragger's avatar
      MSP_Knuckle_Dragger
      Copper Contributor
      Dec 23, 2025

      Confirmed.  This is true on all test systems I've tried.  CoPilot came up with a script that resolved it.  I imagine a future state where a wizard or enablement package automates the process once enough field testing identifies more of these scenarios.