Download Windows 11 26H2 ISO Build 26300.9818 including Updates

This article is about the Windows 11 ISO and a download guide to help you get Windows 11 on your PC faster. Version 26H2 is on its way and you can download it right now. We introduced this method to build and download Windows 11.

Windows 11 is great; it’s a whole new experience, including a beautiful UI, Windows layout options, better multi-monitor options and long waited improvements in performance and better UI . We believe Windows 11 is already a success. Windows 11 is available to download from Microsoft for free, but those links are outdated and not always the latest build version. Use this article to create and build Windows 11 ISO files on your computer. The links are periodically updated to reflect new changes. Whenever there is an update, return to this article and create your latest Windows 11 ISO for free.

If you are also testing preview releases, check our companion guides on Windows 11 Insider Preview ISO Offline Download and the Windows 11 Build Changelog for older versions.

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Download Windows 11 ISO with integrated updates

Download pre-compiled multi-edition ISO packages containing Windows 11 Home, Pro, and Enterprise. Once downloaded, you can flash the ISO to a USB flash drive or mount it directly in Windows.

• Windows 11 Version 26H2 ISO (Build 26300.xxx): Multi-edition x64 image. File size ranges from 5.8 GB to 8.2 GB with integrated cumulative security patches. Includes official SHA-256 verification hash to ensure file integrity.
• Option 2 (Windows Media Creator) Official Microsoft Media Creation Tool: Prefer building via official Microsoft tools? Download through our Windows 11 Media Creation Tool guide to grab the base installation media directly.
  

Once your ISO file finishes downloading, you can use our walkthroughs to create a bootable USB drive or perform a complete clean install of Windows 11.

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Will this delete my files?”

• In-place upgrade: Right-click ISO → Mount → Run setup.exe → Select “Keep personal files and apps”.
• Clean install: Flash ISO via Rufus → Boot from USB → Select custom install.

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Build an Official Windows 11 ISO with integrated updates

UUP Dump Local Build Track: Step-by-step instructions for compiling official, unmodified ISOs directly from Microsoft CDN servers using Aria2 and DISM.

If you prefer building an unmodified, official ISO file straight from Microsoft update servers, you can use the open-source UUP dump tool. It pulls all required Unified Update Platform packages directly from Microsoft CDN servers and compiles them into a bootable ISO locally on your machine.

Grab the compiler script: Download Windows 11 26H2 / 24H2 UUP Package (x64). This package includes Windows 11 Pro, Home, Education, and Enterprise editions.

Follow these steps to generate your ISO: (optional video instructions)

Step 1. Download UUP Package / Compiler Script

Save the UUP dump zip package from the download link above to an easily accessible folder, such as your Downloads or Desktop directory.

Step 2. Extract the tool

Right-click the downloaded zip archive and choose Extract All. Select a destination folder that has at least 15 GB to 20 GB of free storage space to hold temporary build files and the resulting ISO.

Step 3. Start the Automated Download Script

Open the extracted folder and locate the uup_download_windows.cmd batch file. Right-click it and choose Run as administrator. The script uses the Aria2 multi-connection downloader to fetch raw components simultaneously from Microsoft servers.

Bypass Microsoft Defender SmartScreen: If Windows Defender SmartScreen shows a protective blue or green notification stating “Windows protected your PC”, click More info and then click Run anyway. The script is open-source and downloads files directly from Microsoft CDN servers.

Step 4. Allow the tool to run

In the Command Prompt window that appears, press R (or Enter) to begin the automated download and compilation pipeline.

Step 5. Wait till the process finishes

This will take some minutes, use a high-speed internet connection. You can see the progress inside the command prompt window and all the files that this tool download is from the Microsoft server, so yes, there is no involvement of third-party files.

Wait for File Download & ISO Conversion: The process takes between 10 and 25 minutes depending on your internet connection speed and CPU. Aria2 downloads approximately 5 GB to 6 GB of raw update packages, followed by the DISM conversion engine packaging them into a single bootable .ISO image. If your connection drops, simply re-launch the script; Aria2 will resume incomplete files automatically.

Note: If for some reason, you see an error in downloading, just close and start the tool again, it will skip downloaded files and confirm all files are downloaded.

Step 6. Use the ISO to install Windows 11

Find the ISO file inside the Windows-11×64 folder. Now you can install Windows 11 by creating a bootable USB using the Rufus tool.

(Optional) Once the tool downloads all the files, this script will execute another tool that you can find inside the same folder. If you wish to trigger the ISO building process manually, please run the convert-UUP to convert downloaded files to Windows 11 Insider preview ISO.

Helpful articles:

Install Windows 11 on UEFI; Bypass TPM 2, Secure boot, and CPU Requirement

Install Windows 11 26H2 with a Local Account

To flash your Windows 11 ISO onto a USB flash drive and bypass hardware checks (such as TPM 2.0, Secure Boot, and online Microsoft Account requirements), we recommend Rufus:

1. Plug in a USB flash drive with at least 8 GB of capacity (see our guide on how much space Windows requires).
2. Download and launch Rufus. In the Device drop-down, select your USB flash drive.
3. Click Select next to Boot selection, and browse to your downloaded Windows 11 ISO.

1. Click Start. Rufus will present the Windows User Experience dialog. Here you can check Remove requirement for 4GB+ RAM, Secure Boot and TPM 2.0, and check Create a local account with username. Enter your desired offline username.
2. Click OK to write the installation files to the USB drive. When complete, your flash drive is ready to boot on any modern UEFI or legacy PC.

Windows 11 26H2 Release Date

If you’re looking for the official rollout we would like to tell you that it is scheduled for August 2026, As of now, this update will arrive as the cumulative update to all Windows insider preview beta channel users.

As we have told many times in our articles Microsoft will offer an annual feature update for Windows 11 (meaning one feature update every year, followed by monthly stability updates). This year we will get Windows 11 26H2. For your information, it will come with 24 months of support For home & pro editions. Enterprise and education edition gets 36 months of support.

Thank you very much for your support We know you like such articles on our website. You can comment your thoughts in the comments section It would mean so much to us.

Upgrade or Reinstall Windows 11 Directly Without a USB

Main article: How to Clean Install Windows 11 version 24H2 on PC and Laptop

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If your computer is already running Windows 10 or an earlier build of Windows 11 and you want to update in place without formatting a USB stick:

1. Right-click your downloaded Windows 11 ISO file in File Explorer and select Mount. Windows will assign it a virtual DVD drive letter.
2. Open the mounted drive in File Explorer and double-click setup.exe to start the Windows 11 setup wizard.
3. The installer will perform a readiness check to verify compatibility.
4. Choose whether to keep your personal files, apps, and settings, or select Nothing to perform a fresh clean install.
5. Follow the on-screen prompts to complete the installation. Your old files will be safely archived in the Windows.old folder, which you can clean up later using our tutorial on how to delete temporary Windows files.

Windows 11 build release history

Version	Codename	Base Build	Release Channel	Key Requirements
Windows 11 26H2	Dilithium / Bromine	Build 26300+ / 27xxx	Canary / Dev Channel	TPM 2.0, Secure Boot, POPCNT / SSE4.2
Windows 11 25H2	Germanium Refresh	Build 26200+	Beta / Insider Channel	TPM 2.0, Secure Boot, 64-bit CPU
Windows 11 24H2	Germanium	Build 26100	General Availability (Current)	TPM 2.0, Secure Boot, 64-bit CPU
Windows 11 23H2	Sun Valley 3	Build 22631	General Availability	TPM 2.0, Secure Boot, 64-bit CPU
Windows 11 22H2	Sun Valley 2	Build 22621	General Availability	TPM 2.0, Secure Boot, 64-bit CPU

Windows 11 long-term review

We tested the build and we’re impressed with what Microsoft did with the start menu and brought us rounded corners. All the newer Windows 11 builds come with breathtaking Wallpaper and animations. Else is pretty much the same, or we’re yet to discover. Microsoft seems really inspired by TaskbarX (which essentially centers the icons and makes the taskbar transparent). Use the following tweet link to create the latest build ISO on your computer.

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Warning: Many people still rely on the internet to download ISO from the internet which often led PCs to get infected, Folks of UUPdump created this script that compiles ISO using original files obtained from Microsoft servers. Using this tool from our [quickfever.com] website is safe.

Frequently Asked Windows 11 ISO Questions

Is downloading an ISO through UUP dump legal and safe?

Yes. UUP dump does not host copyrighted binaries. The script acts as an open-source orchestration tool that fetches official update packages straight from Microsoft update servers via HTTPS and compiles them locally using Microsoft’s DISM servicing tool.

Can I install Windows 11 on an unsupported CPU or PC without TPM 2.0?

Yes. When using Rufus to write your bootable USB drive, check the option to remove TPM 2.0 and Secure Boot checks. Note that beginning with version 24H2 and newer, CPUs must support the POPCNT instruction (SSE4.2 on Intel or SSE4A on AMD) to boot the Windows kernel.

How do I set up a local offline account without a Microsoft account?

During USB creation in Rufus, check Create a local account. Alternatively, during Windows initial setup (OOBE), press Shift + F10 and type oobe\bypassnro to restart setup with an offline account option enabled.

Frequently asked Windows 11 questions

*These are some of the questions arriving with this build.