Anyone notice the name change of latest Windows 11 ISO?


tailgoddess

tailgoddess

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In the past, the ISO has a version number on it.

Win11_25H2_English_x64.iso
Click to expand...

But the latest one uses the following pattern now:

Windows11_Client_x64_en-us_26300_9457.iso
Click to expand...
 
Windows Build/Version
Windows 11 25H2

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tailgoddess said:
In the past, the ISO has a version number on it.



But the latest one uses the following pattern now:
Click to expand...


Yes.

The top one is 25H2 and the bottom one is 26H2, which has just been released, and shows the version number.


You can also easily upgrade 25H2 to 26H2 with the "Enablement Package" (takes 3 seconds and a reboot)
All the 26H2 things are already in 25H2... they just aren't enabled.

www.elevenforum.com

Windows 11 version 26H2 build 26300.9550 now generally available

Windows IT Pro Blog: Windows 11, version 26H2 is now generally available, delivering the next annual feature update for Windows 11. Built on the same servicing foundation as Windows 11, versions 25H2 or 24H2, version 26H2 continues Microsoft focus on providing a predictable, low-disruption...
www.elevenforum.com www.elevenforum.com
 

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Ghot said:
Yes.

The top one is 25H2 and the bottom one is 26H2, which has just been released, and shows the version number.
Click to expand...

26300_9457 is more likely a build number instead of version number, IMOP
 

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tailgoddess said:
26300_9457 is more likely a build number instead of version number, IMOP
Click to expand...
26300 is the Version (aka 26H2)

9457 is the Build

You can see that for yourself by mounting an ISO, and running the DISM command...

Assumes the mounted drive letter is E: and the ISO has an install.wim file (common on standard ISOs)

DISM /Get-WimInfo /WimFile:E:\Sources\install.wim /index:1

- or -

Assumes the mounted drive letter is E: and the ISO has an install.esd file (common on Media Creation Tool ISOs)

DISM /Get-ImageInfo /ImageFile:E:\sources\install.esd /index:1

Sample result using an MCT ISO with install.esd -

Microsoft Windows [Version 10.0.26300.9445]
(c) Microsoft Corporation. All rights reserved.

C:\Users\Jim>DISM /Get-ImageInfo /ImageFile:E:\sources\install.esd /index:1

Deployment Image Servicing and Management tool
Version: 10.0.26100.8972

Details for image : E:\sources\install.esd

Index : 1
Name : Windows 11 Home
Description : Windows 11 Home
Size : 25,730,139,683 bytes
WIM Bootable : No
Architecture : x64
Hal : <undefined>
Version : 10.0.26300
ServicePack Build : 9457
ServicePack Level : 0
Edition : Core
Installation : Client
ProductType : WinNT
ProductSuite : Terminal Server
System Root : WINDOWS
Directories : 34424
Files : 151120
Created : 9/13/2026 - 11:44:28 AM
Modified : 9/30/2026 - 2:42:50 PM
Languages : en-US (Default)
The operation completed successfully.
 
Last edited:

My Computer My Computer

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Windows 11 Pro 26H2
OS
Windows 11 Pro 26H2
Computer type
Laptop
Manufacturer/Model
Toshiba
Antivirus
Defender
I hadn't noticed but am surely appreciate the change.. Now we don't have to manually figure out the version and build of an iso.
 

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System One System Two Other systems

  • At a glance

    Windows 11 Pro 26H2 26300.9457i9-10900 10 core 20 threads32 gbnone-Intel UHD Graphics 630
    OS
    Windows 11 Pro 26H2 26300.9457
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Optiplex 7080
    CPU
    i9-10900 10 core 20 threads
    Motherboard
    DELL 0J37VM
    Memory
    32 gb
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    none-Intel UHD Graphics 630
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    Integrated Realtek
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    Benq 27
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    2560x1440
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    2x1tb Solidigm m.2 nvme /External drives 512gb Samsung m.2 sata+2tb Kingston m2.nvme
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    500w
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    Logitech wired
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    Logitech wireless
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    so slow I'm too embarrassed to tell
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    #1 Edge #2 Firefox
    Antivirus
    Defender+MWB Premium

  • At a glance

    Windows 11 Pro 24H2 26200.9457AMD Ryzen 7 6800U32 gbintegrated
    Operating System
    Windows 11 Pro 24H2 26200.9457
    Computer type
    PC/Desktop
    Manufacturer/Model
    Beelink Mini PC SER5
    CPU
    AMD Ryzen 7 6800U
    Memory
    32 gb
    Graphics card(s)
    integrated
    Sound Card
    integrated
    Monitor(s) Displays
    Benq 27
    Screen Resolution
    2560x1440
    Hard Drives
    1TB Crucial nvme
    Keyboard
    Logitech wired
    Mouse
    Logitech wireless
    Internet Speed
    still too embarrassed to tell
    Browser
    Firefox
    Antivirus
    Defender
  • System 3 is non compliant Dell 9020 i7-4770/24gb ram Win11 PRO 26200.9457
Yep, a change for the better, one less step when you use an ISO.
 

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    Win 11 Pro 26H2, Build 26300.9711Intel Core i5 14500, 14th Generation64GB DDR4GeForce RTX 4060
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    Win 11 Pro 26H2, Build 26300.9711
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    PC/Desktop
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    Home Brew
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    Microsoft Comfort Curve 2000
    Mouse
    Logitech G305
    Internet Speed
    Verizon FiOS 1GB
    Browser
    Firefox
    Antivirus
    MalwareBytes & Windows Defender Security

  • At a glance

    Win 11 Pro 25H2, Build 26300.9550Intel Core i5 1440032GB DDR5Intel 700 Embedded GPU
    Operating System
    Win 11 Pro 25H2, Build 26300.9550
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Brew
    CPU
    Intel Core i5 14400
    Motherboard
    Gigabyte B760M DS3H AX
    Memory
    32GB DDR5
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    Intel 700 Embedded GPU
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    Realtek Embedded
    Monitor(s) Displays
    27" HP 1080p
    Screen Resolution
    1920x1080
    Hard Drives
    Crucial P310 2TB NVMe Gen4 SSD
    Samsung EVO 990 2TB NVMe Gen4 SSD
    Samsung 2TB SATA SSD
    Seagate 4TB Ironwolf, rotating HDD secondary backup
    PSU
    Thermaltake Smart BM3 650W
    Case
    Okinos Micro ATX Case
    Cooling
    Fans
    Keyboard
    Microsoft Comfort Curve 2000
    Mouse
    Logitech G305
    Internet Speed
    Verizon FiOS 1GB
    Browser
    Firefox
    Antivirus
    Malware Bytes & Windows Defender Security
  • Nimo N171 17" Laptop, (Intel i3-1215U, 16GB RAM, 2TB NVMe, Win11 Pro)
    Acemagic Vista Mini PC V1 (Intel N150, 16GB RAM, 1TB NVMe, Win11 Pro)
    HP ENVY h8-1540t, (24GB RAM, 2TB SSD, 2TB HDD, Win11 Pro)
tailgoddess said:
In the past, the ISO has a version number on it.
Click to expand...
I guess that depends, where you have downloaded the ISO from, the build and version is usually listed.
Code: 
en-us_windows_11_consumer_editions_version_26h2_x64_dvd_af326c9d.iso
Windows11_InsiderPreview_Client_x64_en-us_29680_1000.iso
 

Attachments

  • capture_10102026_123255.webp
    capture_10102026_123255.webp
    45.8 KB · Views: 1
  • capture_10102026_123508.webp
    capture_10102026_123508.webp
    37.6 KB · Views: 1

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glasskuter said:
I hadn't noticed but am surely appreciate the change.. Now we don't have to manually figure out the version and build of an iso.
Click to expand...
The version number is hard to tell at first glance. Something like 26H2 is better.

Code: 
Windows11_Client_x64_en-us_26300_9457.iso
 

My Computer My Computer

At a glance

Windows 10
OS
Windows 10
Computer type
PC/Desktop
Manufacturer/Model
Asus
What's weird is the build number isn't written as 26300.9457.

For example, the ESD images are "26300.9457.260913-1737.26h2_ge_release_svc_refresh_CLIENTBUSINESS_VOL_x64FRE_en-us.esd"
 

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