Get ready for Windows 11 version 26H2



 Windows IT Pro Blog:

The next annual update for Windows 11 is coming soon and is already available to Windows Insiders! Windows 11, version 26H2 continues our focus on delivering a predictable, low-disruption update experience for organizations and IT professionals.

For devices already running recent versions of Windows 11, this release should be easy to adopt. It builds on the same platform and servicing approach introduced in prior releases, while continuing to improve how updates are delivered, tested, and deployed.

In this post, we'll walk through how to prepare for Windows 11, version 26H2.

A familiar update experience, refined​

Windows 11, version 26H2 uses the same shared servicing model as recent releases available annually in the second half of the calendar year. Supported devices get this feature update as a small enablement package instead of a full OS replacement.

If your organization is already on Windows 11, version 24H2 or 25H2, the update to 26H2 is similar to a regular monthly update in most environments:
  • A small, quick installation
  • Minimized disruption to users
  • No need for full reimaging or complex deployment motions
Note: Devices running Windows 11, version 26H1 won't be able to update to version 26H2. Instead, they'll have a path to update to a future Windows release. This is because Windows 11, version 26H1 is based on a different Windows core than Windows 11, versions 24H2, 25H2, and 26H2. Here's What to know about Windows 11, version 26H1.

This is possible because multiple versions of Windows 11 share a common servicing branch, including:
  • The same source code base
  • The same security and quality updates
  • The same compatibility validation
The difference between versions is simply which features are enabled.

Diagram showing the steps when new features are enabled when versions share a servicing branch

Shared servicing branch progression

Why this matters for IT organizations​

The shared servicing model isn't just a technical detail. It directly impacts how you manage updates across your environment. Compared to full OS upgrades of the past, Windows 11, version 26H2 comes with reduced deployment complexity, improved compatibility confidence, and faster time to value.

Reduced deployment complexity​

Because features are delivered continuously and enabled later, there's no large "upgrade event." This makes planning easier and reduces operational overhead.

Improved compatibility confidence​

Devices moving between versions on the same servicing branch typically benefit from:
  • Existing application compatibility validation
  • Lower risk of regressions
  • Fewer surprises during rollout

Faster time to value​

With smaller updates and faster installations, organizations can move more quickly to the most current release. New features reach you without lengthy deployment cycles.

Support lifecycle considerations​

As with previous annual feature updates, moving to Windows 11, version 26H2 resets the Windows support lifecycle for your devices.

This provides:
  • 24 months of support for Home, Pro, Pro EDU, and Pro for Workstations editions
  • 36 months of support for Enterprise, Education, IoT Enterprise, and Enterprise Multi-session editions
What does it mean for your servicing strategy? The annual update becomes a key milestone for maintaining a supported and secure environment.

How to prepare for Windows 11, version 26H2​

Already managing Windows 11 in your organization? Preparing for 26H2 should align with your existing update processes.

1. Validate today​

Begin testing with devices running recent versions of Windows 11 to confirm compatibility with your apps, policies, and infrastructure.

If you'd like to get a peak of what's coming and begin previewing version 26H2 on devices now, the update is available through the Windows Insider Program in the Experimental channel. Otherwise, your organization might prefer to wait for the update to become available in Release Preview before doing more extensive testing. At that stage, the experience is closer to final shipping quality. We'll have more information to share when version 26H2 is in Release Preview.

2. Use your existing deployment tools​

Windows 11, version 26H2 will be available through familiar channels, including:
  • Windows Autopatch
  • Microsoft Intune
  • Windows Server Update Services (WSUS)

3. Plan your rollout rings​

Use your standard deployment rings to:
  1. Pilot the update with a small group of devices.
  2. Expand gradually based on validation results.

4. Stay current​

Windows features are delivered continuously. Stay up to date with monthly updates to help ensure a smoother transition when the feature update becomes available.

Timeline showing features delivered monthly and enabled together in a feature update

Feature delivery over time with enablement moment

Looking ahead and staying informed​

Windows 11, version 26H2 continues the move toward a more predictable and efficient servicing model. This model helps reduce disruption while helping your organization stay secure and up to date. By building on a shared platform and delivering innovation continuously, Windows enables you to focus less on large upgrade projects and more on delivering value to your users.

We'll continue to share updates and guidance as Windows 11, version 26H2 becomes available. In the meantime, test it in the Windows Insider Program's Experimental channel and use the updated plan-prepare-deploy learning path to get ready.




 Source:

 
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I reckon 26H2 will go to Release Preview around August/September
 

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Windows 11 Pro 25H2 (RP channel)AMD Ryzen 7 9800X3D 8-core64GB Corsair Titanium 6000/CL30MSI Suprim 5080 SOC
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Windows 11 Pro 25H2 (RP channel)
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PC/Desktop
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MSI
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AMD Ryzen 7 9800X3D 8-core
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MEG X870E Godlike
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Well, I did something I definitely regret. I installed 26H1 on my main test machine without paying enough attention to the documentation, and now there’s no way to upgrade to 26H2. I was tired… Is there any possible way to go back without wiping everything? Since it was a clean install, I can’t just roll back. Maybe there’s a trick to get the install to accept 25H1 without a full wipe? Just worried about the registry. I hate to do it because this thing is running so fast! Asking for a friend. 🤣😂😊
 

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    Windows 11 Pro 26H1 (Build 28020.2308)AMD FX 8350 8 Core Processor, 4400 Mhz (Overc...24.0 GBAMD Radeon HD 7570 2GB
    OS
    Windows 11 Pro 26H1 (Build 28020.2308)
    Computer type
    PC/Desktop
    Manufacturer/Model
    ASUS Case
    CPU
    AMD FX 8350 8 Core Processor, 4400 Mhz (Overclocked)
    Motherboard
    M5A78L-M/USB3
    Memory
    24.0 GB
    Graphics Card(s)
    AMD Radeon HD 7570 2GB
    Sound Card
    AMD High Definition Audio Device
    Monitor(s) Displays
    Acer 27" SA240Y LED
    Screen Resolution
    1920x1080 Resolution
    Hard Drives
    Samsung SSD 860 EVO 500GB ATA Device
    WD My Book 25EE 4TB USB
    Toshiba External 3.0 TB USB
    WD Black External 1.0 TB USB
    PSU
    Corsair RM750x
    Case
    Custom Spider 9000
    Cooling
    Modded
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    Logitech K360
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    Logitech M325
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    AT&T 1GB Fiber
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    MS Edge
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    MS Windows Security
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    Not bad for free parts!!!
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    Windows 11 Pro 26H1 (Build 28020.2308)AMD A6 Vision8GB
    Operating System
    Windows 11 Pro 26H1 (Build 28020.2308)
    Computer type
    Laptop
    Manufacturer/Model
    Toshiba Satellite Pro
    CPU
    AMD A6 Vision
    Memory
    8GB
    Sound Card
    AMD High Definition Audio Device
    Monitor(s) Displays
    Built In
    Hard Drives
    Samsung SSD 860 EVO 500GB ATA Device
    Internet Speed
    AT&T Gigabit Fiber
    Browser
    Google Chrome
    Antivirus
    Windows Defender
Well, I did something I definitely regret. I installed 26H1 on my main test machine without paying enough attention to the documentation, and now there’s no way to upgrade to 26H2. I was tired… Is there any possible way to go back without wiping everything? Since it was a clean install, I can’t just roll back. Maybe there’s a trick to get the install to accept 25H1 without a full wipe? Just worried about the registry. I hate to do it because this thing is running so fast! Asking for a friend. 🤣😂😊

No. You will have to do a clean install. If you want to go to 26H2, you'll have to wait til the fall, download the iso. and install it. Its a lesson: pay attention to what you're doing before making a mistake you can't do undo later.
 

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    Windows 11 Education For 25H2Intel® Core i7 5500u8 GBIntel HD Family Graphics 5500 AMD Firepro 4150M
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    Windows 11 Education For 25H2
    Computer type
    Laptop
    Manufacturer/Model
    HP ZBook G2
    CPU
    Intel® Core i7 5500u
    Motherboard
    HP
    Memory
    8 GB
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    Intel HD Family Graphics 5500 AMD Firepro 4150M
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    Realtek High Audio
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    1 TB SSD
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    Windows Defender
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    Windows 11 Pro For Workstations 25H2Xeon 1535m v632 GBAMD Quadro Pro 4100
    Operating System
    Windows 11 Pro For Workstations 25H2
    Computer type
    Laptop
    Manufacturer/Model
    HP Zbook G4
    CPU
    Xeon 1535m v6
    Motherboard
    HP
    Memory
    32 GB
    Graphics card(s)
    AMD Quadro Pro 4100
    Sound Card
    Bang and Olufson Audio
    Hard Drives
    1TB SSD
    Mouse
    HP USB Mouse
    Antivirus
    Windows Defender
I reckon 26H2 will go to Release Preview around August/September
The funny thing is that with the 24H2 release Microsoft pushed that directly to the RP channel at the end of May. Why 26H2 (which is basically the same as 24H2/25H2) is released to the experimental?
 

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Windows 11i5-12500H16GB DDR5
OS
Windows 11
Computer type
Laptop
Manufacturer/Model
HP
CPU
i5-12500H
Memory
16GB DDR5
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Microsoft Edge
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