Windows 11 26H2 Download: How to Install Windows 11 Full Guide (2026)

Windows 11 26H2 Download: How to Update or Clean Install (Complete 2026 Guide)

Microsoft has released Windows 11 26H2, also called the Windows 11 2026 Update. It began rolling out on September 29, 2026.

If you want to know how to get it, the answer depends on your PC. Most people can install it from Windows Update in a few minutes. Others will prefer the Installation Assistant, the Media Creation Tool, or an ISO file for an upgrade or a fresh install.

If you want to download Windows 11 26H2, the easiest and safest method is to use Windows Update. However, Microsoft also provides several other ways to install the latest version, including the Windows 11 Installation Assistant, Media Creation Tool, and an official Windows 11 26H2 ISO file.

You can download Windows 11 directly from Microsoft's official website:

Download Windows 11 from Microsoft

This guide covers every method, step by step, including how to upgrade using a mounted ISO and how to clean install Windows 11 26H2 from a bootable USB drive.

What is Windows 11 26H2?

Windows 11 26H2 is the 2026 annual feature update. It shares its servicing foundation with 24H2 and 25H2. For PCs already on those versions, it arrives as a tiny enablement package (KB5121794), only about 174 KB on x64 systems. It switches on features that earlier monthly updates already delivered in a dormant state.

In practice, that means:

• A very small download
• One restart
• Low risk of problems
• The build number moves to 26300

That means upgrading from 24H2 or 25H2 can be considerably faster than installing an entirely new version of Windows.

If you're coming from an older version such as 23H2, expect a full upgrade with a much larger download and a longer install

Note: Windows 11 26H1 is a separate release that ships only on select new Arm-based PCs. It isn't a manual upgrade path for typical desktops and laptops.

What's New in Windows 11 26H2

26H2 is more about polish and consolidation than flashy changes. Much of the list may already be on your PC through monthly updates. Highlights include:

• Start menu: Small and Large sizes, plus options to hide the Pinned, Recent or All sections.
• Taskbar: Move it to the top, left or right, with a smaller taskbar option.
• Windows Search: Result previews, better handling of typos, labelled result types, and the option to turn off web suggestions.
• File Explorer: A faster Home page, more archive formats, and AI actions for images.
• Settings Agent: An AI assistant that lets you find and change settings in plain language.
• Security: Administrator protection, Smart App Control that can be switched on or off without reinstalling, a built-in Sysmon (off by default), and broader Windows Hello fingerprint support.
• Recovery: Point-in-time restore and Windows settings backup.
• Task Manager: New optional columns showing NPU usage.

Some features depend on your edition, hardware, or a Microsoft 365/Copilot licence, so what you see may differ from another PC.

Check out all the New Features of Windows 11 26H2 Here

Windows 11 26H2 System Requirements

To install Windows 11 officially, your PC needs:

• Processor: 1 GHz or faster, 2+ cores, on a compatible 64-bit processor
• RAM: 4 GB or more
• Storage: 64 GB or more
• Firmware: UEFI with Secure Boot
• TPM: version 2.0
• Graphics: DirectX 12 compatible with a WDDM 2.0 driver
• Display: 720p, larger than 9 inches diagonal

Check Microsoft's official page for the latest requirements before installing.

How to Download Windows 11 26H2

There are several ways to install Windows 11 26H2:

1. Windows Update – Recommended for most users
2. Windows 11 Installation Assistant
3. Media Creation Tool
4. Windows 11 26H2 ISO file
5. Upgrade using the ISO without deleting files
6. Clean install using a bootable USB

For most people, I recommend starting with Windows Update.

Method 1: Download Windows 11 26H2 Using Windows Update

Windows Update is the easiest way to upgrade to Windows 11 26H2 because Windows handles the download, installation, and restart automatically.

Before using other methods, check Windows Update first.

Step 1: Open Windows Settings

Press:

Windows + I

to open the Settings app.

Alternatively, right-click the Start button and select Settings.

Step 2: Open Windows Update

Go to:

Settings → Windows Update

Windows will check whether new updates are available.

Step 3: Enable the Latest Updates Option

If available, turn on:

Get the latest updates as soon as they're available

This allows Windows to offer eligible feature updates sooner.

Step 4: Check for Updates

Click:

Check for updates

If Windows 11 version 26H2 is available for your PC, you should see an option similar to:

Windows 11, version 26H2

Click:

Download & install

Microsoft says the rollout is phased, so not every compatible PC necessarily receives the update at exactly the same time.

Step 5: Restart Your PC

After Windows finishes preparing the update, you will be asked to restart your computer.

Save your work and restart the PC.

Windows will complete the installation automatically.

For PCs already running Windows 11 24H2 or 25H2, Microsoft says the 26H2 enablement package requires a single restart.

What If Windows 11 26H2 Is Not Showing in Windows Update?

Don't worry if you don't immediately see Windows 11 26H2.

Microsoft is using a phased rollout, which means the update can become available to different devices at different times. Microsoft can also temporarily place a safeguard hold on devices where a known compatibility problem has been identified.

You can try:

• Click Check for updates again
• Make sure Windows is fully updated
• Turn on Get the latest updates as soon as they're available
• Restart the computer
• Check Windows Update again

If 26H2 still isn't offered, you can use one of Microsoft's other official installation methods.

Other Ways to Download Windows 11 26H2

If Windows Update doesn't offer 26H2, or you want a fresh install, you can get it from Microsoft's official download page:

👉 Download Windows 11

That page offers three options, all free and official.

Method 2: Install Windows 11 26H2 Using Installation Assistant

Microsoft's Windows 11 Installation Assistant is another easy way to upgrade an existing compatible Windows installation.

This is useful when:

• Windows Update isn't offering 26H2 yet
• You want to manually start the upgrade
• You don't want to create a USB drive
• You want to keep your existing files and applications

Go to Microsoft's official Windows 11 download page:

Windows 11 Download Page

Look for the Windows 11 Installation Assistant section and download the tool.

How to use Installation Assistant

1. Download the Windows 11 Installation Assistant.
2. Run the downloaded application.
3. Allow it to make changes if Windows asks for permission.
4. The tool will check your PC.
5. Follow the instructions displayed on screen.
6. Let Windows download the required files.
7. Restart your PC when prompted.
8. Windows will complete the upgrade.

This method is designed for upgrading an existing Windows installation rather than performing a clean installation.

Method 3: Install Windows 11 26H2 Using the Media Creation Tool

Microsoft also provides the Windows 11 Media Creation Tool.

The Media Creation Tool is particularly useful if you want to:

• Create a Windows 11 installation USB
• Prepare installation media for another PC
• Reinstall Windows
• Have a USB installer ready for future use

Download it from the official Microsoft Windows 11 download page:

Download Windows 11 Media Creation Tool

After downloading the tool:

1. Run the Media Creation Tool.
2. Accept Microsoft's license terms.
3. Select the appropriate language and Windows edition when prompted.
4. Choose the option to create installation media.
5. Connect a USB flash drive.
6. Select the USB drive.
7. Let the tool download Windows and create the bootable installation media.

Important: The USB drive may be erased during this process, so back up anything important stored on it first.

Once the USB is created, you can use it to install Windows 11 on a compatible computer.

Method 4: Download the Windows 11 26H2 ISO File

An ISO file is a complete copy of the Windows installer. It's ideal for offline installs, virtual machines, repairing a PC, or making your own bootable USB.

1. On the Microsoft download page, scroll to Download Windows 11 Disk Image (ISO).
2. Choose Windows 11 (multi-edition ISO) from the dropdown and click Download.
3. Select your product language and click Confirm.
4. Click the 64-bit Download button.
5. Save the file. It's several gigabytes, so allow some time.

Tip: Microsoft publishes the official file hash on the download page. You can verify your download in PowerShell:

Get-FileHash C:\Path\To\Windows11.iso -Algorithm SHA256

Compare the output with the hash on Microsoft's page to confirm the file is genuine and intact.

How to Upgrade to Windows 11 26H2 Using the ISO (Mount and Run Setup)

This method keeps your files and apps. It's handy when Windows Update fails or you want to repair or upgrade without making a USB drive.

1. Locate the downloaded ISO file in File Explorer.
2. Right-click the ISO and choose Mount. Windows creates a virtual DVD drive.
3. Open the new drive and double-click setup.exe.
4. Click Next on the installer screen. You can choose Change how Setup downloads updates if you wish.
5. Accept the licence terms.
6. On the Ready to install screen, confirm that Keep personal files and apps is selected. If not, click Change what to keep.
7. Click Install. The PC restarts several times.
8. When it finishes, sign in and verify your version (see below).

Before you start:

• Back up important files.
• Disconnect unnecessary USB devices.
• Make sure you have at least 20 GB of free space.
• Keep a laptop plugged into power.

How to Clean Install Windows 11 26H2 from a Bootable USB

A clean install wipes the drive and gives you a fresh system with no leftover clutter. It's a good fix for a slow PC, persistent errors, or a new SSD.

⚠️ Warning: A clean install erases the partition you install onto. Back up all your data first.

What you need

• A USB flash drive of 8 GB or larger (it will be erased)
• A working PC to create the USB
• The Windows 11 26H2 ISO (Method 4) or the Media Creation Tool (Method 3)

Step 1: Create the bootable USB

Option A: Media Creation Tool (simplest)

1. Run the Media Creation Tool.
2. Choose USB flash drive and select your drive.
3. Wait for it to download Windows and write it to the USB.

Option B: Rufus (using your ISO)

1. Download Rufus from its official website and open it.
2. Under Device, select your USB drive.
3. Click SELECT and choose your Windows 11 ISO.
4. Leave the defaults (GPT partition scheme and UEFI target) for most modern PCs.
5. Click START and confirm the prompts.

Step 2: Boot from the USB

1. Plug the USB into the target PC and restart it.
2. Press the boot menu key as it starts. Common ones are F12, F10, F9, Esc, F2 or Del, depending on the manufacturer.
3. Select your USB drive (preferably the UEFI entry).

Step 3: Install Windows 11

1. Choose your language, time and keyboard, then click Next.
2. Click Install now.
3. Enter your product key, or choose I don't have a product key if Windows was previously activated on this PC. It activates automatically once you're online.
4. Select the edition (for example Home or Pro) matching your licence.
5. Accept the licence terms.
6. Choose Custom: Install Windows only (advanced).
7. Select the partition where Windows is installed. Delete the old partitions if you want a completely fresh start, or select Unallocated Space on a new drive.
8. Click Next. Windows copies files and restarts a few times. Remove the USB when the PC first restarts, or it may boot into setup again.
9. Complete the setup: region, keyboard, network, account and privacy choices.

Step 4: Finish up

• Run Windows Update to get the latest cumulative updates and drivers.
• Install your graphics, chipset and network drivers from the manufacturer if needed.
• Restore your files and reinstall your apps.

Important Things to Do Before Installing Windows 11 26H2

Before starting any major Windows upgrade, I recommend doing the following:

Back up important files

Copy important documents, photos, videos and other personal files to another drive or cloud storage.

Keep your laptop connected to power

If you're using a laptop, connect the charger before starting the upgrade.

Make sure you have enough free storage

Windows Setup needs free space to download and install the update.

Update important drivers

Make sure important hardware such as graphics, Wi-Fi and chipset drivers are compatible.

Disconnect unnecessary external devices

If you're having installation problems, temporarily disconnect unnecessary USB devices, external drives and other peripherals.

Don't interrupt the installation

If Windows is installing updates and restarting, don't turn off the computer unless Windows specifically tells you to.

Frequently Asked Questions

Is Windows 11 26H2 available now?

Yes. Microsoft released Windows 11 version 26H2 to general availability on September 29, 2026. The rollout is phased across eligible devices.

Can I upgrade from Windows 11 25H2 to 26H2?

Yes. Microsoft says Windows 11 25H2 and 26H2 share the same underlying operating-system core, and 26H2 can be delivered through an enablement package.

Can I upgrade from Windows 11 24H2 to 26H2?

Yes, eligible 24H2 devices can upgrade to Windows 11 26H2 through Windows Update using the enablement package.

Can I install Windows 11 26H2 without losing my files?

Yes. If you perform an in-place upgrade and choose Keep personal files and apps, your existing files and applications can remain installed.

Running setup.exe from the mounted ISO is one way to perform this type of upgrade.

Can I install Windows 11 26H2 from an ISO?

Yes. Microsoft provides Windows 11 ISO installation media. You can mount the ISO and run Setup for an in-place upgrade, or use it to create bootable installation media for a clean installation.

Can I clean install Windows 11 26H2?

Yes. You can create a bootable USB installer and boot your PC from it to perform a fresh Windows installation.

Will a clean installation delete my files?

A clean installation can delete files on the Windows installation drive, especially if you delete or format partitions during Setup.

Always back up important data before starting.

Do I need a USB drive to install Windows 11 26H2?

No.

If you only want to upgrade your existing Windows installation, you can use Windows Update, Installation Assistant, or mount the ISO and run setup.exe.

A USB drive is mainly useful when you want installation media or a clean installation.

Where can I download Windows 11 26H2?

The safest option is Microsoft's official Windows 11 download page:

Microsoft Windows 11 Download

Final Thoughts

Windows 11 26H2 is a smooth, low-risk update for most people. Start with Windows Update. If that doesn't work, use the Installation Assistant, Media Creation Tool, or the ISO file from Microsoft. For a fresh start, a bootable USB clean install takes under an hour.

For users currently on Windows 11 24H2 or 25H2, the move to 26H2 is especially straightforward because Microsoft uses an enablement package for these versions.

For users who want more control, all of Microsoft's official Windows 11 installation options are available from the official download page.