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To download the Windows 11 26H2 ISO, open Microsoft’s Windows 11 download page, use the disk-image ISO section, and follow its edition and language prompts. Microsoft’s page currently identifies 26H2 as the Windows 11 2026 Update; check the page when you download because release labels and generated links can change.
Choose the right Windows 11 download route
An ISO is useful when you need installation media, want to mount the image and run Setup, or need a file for a virtual machine. It is not the only way to upgrade every Windows 11 PC.
| Your goal or device | Official route | Important distinction |
|---|---|---|
| Download an image for a PC with an x64 processor | Windows 11 Disk Image (ISO) for x64 devices | The public ISO is multi-edition; the product key unlocks the corresponding edition. |
| Install on an Arm-based PC | Use Microsoft’s separate Arm64 ISO option | Check the target processor architecture before downloading. The Media Creation Tool does not create Arm installation media. |
| Create a USB or DVD installer for an x64 PC | Microsoft’s Media Creation Tool, or use the ISO to prepare media | The tool is x64-only. Creating media erases the USB drive’s existing contents. |
| Upgrade the PC you are using | Microsoft recommends the Windows 11 Installation Assistant for the current device | It works only on x64 processors and requires Windows 10 version 2004 or later, a Windows 10/11 license, and 9 GB of free disk space. |
| Upgrade from Windows 11 24H2 or 25H2 | Check Windows Update and Microsoft’s current upgrade guidance | These releases share a servicing branch with 26H2 and can use an enablement package; a full ISO may not be necessary. |
For an Insider Preview build, use Microsoft’s separate Windows Insider ISO instructions, not the public release download flow.
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Download the Windows 11 26H2 ISO
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Open Microsoft’s Download Windows 11 page. Confirm that it still identifies version 26H2 as the release you want.
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Find the disk-image ISO section for x64 devices and select the offered edition. Submit the selection, then choose a product language. Microsoft says the language should match the language used during installation.
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Start the generated download and save the ISO somewhere with enough free storage. Microsoft describes the download as a multi-edition ISO that uses the product key to unlock the correct edition.
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If you need to verify the file, use the verification details shown on Microsoft’s page for that exact image. Do not rely on an old hash: the reviewed page did not establish a stable 26H2 SHA-256 value.
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Choose whether to mount the ISO and run
setup.exe, or use it to create installation media for another device or a clean install.
Use Microsoft’s page rather than an unofficial mirror. Its generated download links may change or expire, so return to the page instead of relying on a copied direct-download link.
Check the architecture and media requirements
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Check whether the target PC uses an x64 or Arm processor. Microsoft lists the public x64 ISO and a separate Arm64 ISO; the Media Creation Tool is x64-only.
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To create a USB installer, use a blank flash drive with at least 8 GB of space. Its contents will be deleted during media creation. A USB drive is not necessary just to download or mount the ISO.
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For DVD media, Microsoft specifies a blank DVD of at least 8 GB and a DVD burner. If the image does not fit, Microsoft suggests a higher-capacity dual-layer DVD.
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The target needs a 64-bit CPU and must meet Windows 11 system requirements. Microsoft warns that installing on a PC below minimum requirements can cause compatibility issues and leave it unsupported and not entitled to updates. Check the PC maker’s site for hardware compatibility and drivers.
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Use the ISO for an upgrade or clean installation
Run Setup from Windows
For an in-place setup path, mount the ISO in File Explorer and start setup.exe. Microsoft’s Insider ISO guidance says users can choose to keep Windows settings, personal files, and apps during an in-place upgrade. Available choices can depend on the installation and should be checked in Setup before proceeding.
Boot from USB or DVD
Use the ISO to create bootable media, then start the target PC from that media. You may need to open the boot menu or change the BIOS/UEFI boot order; the key and procedure vary by device, so follow the PC manufacturer’s instructions.
Perform a clean install
A clean installation erases files, settings, and applications. Back up important files and make sure you can reinstall needed applications before starting. Microsoft’s Insider ISO instructions describe selecting “Change what to keep” and then “Nothing” for a clean install. Review the choices shown in Setup carefully before confirming.
When a full ISO is unnecessary
Microsoft’s shared-servicing documentation lists Windows 11 versions 24H2, 25H2, and 26H2 on a shared servicing branch. A device on 24H2 or 25H2 can move to 26H2 using an enablement package. Check Windows Update and Microsoft’s current upgrade guidance if that is your situation; the full ISO remains useful for installation media, a clean install, deployment, a virtual machine, or an upgrade from a version outside that shared branch. See Microsoft’s shared servicing model explanation.
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