How to download Tiny11 ISO for Windows 11 26H2

Create a custom Windows 11 26H2 ISO using the UUP Dump tool and Tiny11 Builder.
Remove built-in apps like Edge, OneDrive, Xbox, Copilot, Teams, and more.
Enable local account setup by bypassing the Microsoft account requirement.
I have tested these instructions in July 2026, and they remain accurate.

Tiny11 Builder lets you create a custom Windows 11 26H2 installation ISO that removes unnecessary apps, bypasses the Microsoft account requirement, and delivers a cleaner installation experience. In this guide, you’ll learn how to build your own debloated Windows 11 26H2 installation media.

It’s important to note that version 26H2 is still under development as of this writing, but you can create a custom image file from the latest preview, which you can download with the UUP Dump tool. Once the new version becomes fully available, you can download the ISO file from the Microsoft support website.

What is Tiny11 Builder?

Tiny11 Builder is a third-party script created by community developer @NTDEV that lets you customize and streamline Windows 11 installation media. Instead of downloading a prebuilt modified ISO, the tool uses an official Windows 11 ISO as its source and automatically creates a debloated version by removing many of the operating system’s built-in apps and components.

The resulting image is commonly referred to as a Tiny11 ISO, Windows 11 Tiny ISO, or Windows 11 Lite ISO.

During the build process, Tiny11 Builder can remove apps such as Clipchamp, News, Weather, Xbox, Get Help, Media Player, Quick Assist, OneDrive, Copilot, Outlook, Microsoft Teams, and even Microsoft Edge. It also generates an unattended answer file that bypasses the Microsoft account requirement, allowing you to create a local account during setup. In addition, the tool enables Windows’ Compact OS deployment option to reduce the size of the installation and improve storage efficiency.

Why use Tiny11 Builder?

Windows 11 has been adding more features and preinstalled apps with each update, many of which aren’t essential for everyone. Tiny11 Builder gives you full control to create a customized and slimmed-down version of the operating system tailored to your specific needs.

It’s ideal for advanced users who prefer local accounts, minimal installations for performance or testing, virtual machines, older hardware setups, or those with privacy concerns.

In this guide, I will show you how to download and create a Tiny11 ISO (Lite ISO) for Windows 11 26H2.

Create Windows 11 26H2 ISO using Tiny11 Builder (UUP Dump)
Pureinfotech’s Take
FAQs about creating Windows 11 26H2 ISO using Tiny11 Builder

Important: It’s recommended to create a backup of your computer before installing this custom version of Windows. You have been warned. Also, even though the tool hasn’t been updated since 2025, you can still use it for the upcoming Windows 11 versions 25H2 and 26H2, as they are virtually the same.

Create Windows 11 26H2 ISO using Tiny11 Builder (UUP Dump)

To download and create a custom Windows 11 26H2 ISO file using the Tiny11 Builder and UUP Dump script, follow these steps:

Open the UUP Dump page.
Click the Downloads tab.
Select the latest (x64) ISO file of Windows 11 26H2, for example, build 26300.xxxx.

Quick tip: In the case of version 26H2, always choose a build equal to or higher than 26300.xxxx. If you have a Copilot+ PC or a device using an ARM processor, then download the “arm64” architecture.
Select the language for the installation in the “Language” setting.
Click the Next button.
Select the version 26H2 editions to include in the Windows 11 ISO file.
Click the Next button.
Select the “Download and convert to ISO” option.
Check the “Include updates (Windows converter only)” option.

Quick note: This step enables the script to integrate the updates, resulting in an ISO file version 26H2. As a result of this option, the process of creating the ISO file can take approximately an hour.
Click the “Create download package” button to save the tool on your computer.
Open the zip folder with File Explorer.
Click the Extract all button.
Select the location where you want to extract the files.
Click the Extract button.
Right-click the “uup_download_windows.cmd” batch file and select the Run as administrator option.
Click the More info option.
Click the “Run anyway” button to begin the lengthy process.
Press the “R” key to run the script once, and then press the Enter key.
Press the 0 key when prompted to close the screen.
Open the Tiny11Builder GitHub page.
Click the latest zip file available under the “Assets” section.
Save the file containing the script on your device.
Open the folder location.
Select the Tiny11Builder zip file.
Click the Extract all button.
Click the Extract button.
Open File Explorer.
Open the Windows 11 26H2 ISO folder location.
Right-click the ISO file and select the “Mount” option.
Confirm the drive letter of the virtual drive where the ISO is mounted.
Open Start.
Search for PowerShell, right-click the top result, and choose the Run as administrator option.
Type the following command to allow the Tiny11Builder script to run on the computer and press Enter:
```
Set-ExecutionPolicy Unrestricted -Scope CurrentUser
```
Type the following command to run the Tiny11Builder script and press Enter:
```
& "C:\PATH\TO\SCRIPT\tiny11maker.ps1"
```
Quick tip: The folder includes two scripts, the “tiny11maker.ps1” that removes most default apps (recommended), and then there is the “tiny11Coremaker.ps1” script that debloats the operating system and removes Store components, disables Microsoft Defender Antivirus, and turns off the Windows Update system.
Type “R” and press Enter.
Confirm the drive letter for the Windows 11 mount point, then press Enter.
Confirm the index number for the operating system edition to create the image, then press Enter.

Quick note: Since we’re using the UUP Dump script, you may only see one or two index options, whereas the official ISO file typically includes all editions of the operating system.
Press Enter to complete the process and exit the script.
Type the following command to set the more secure PowerShell execution policy and press Enter:
```
Set-ExecutionPolicy Restricted
```

Once you complete the steps, the script will create a custom ISO file that you can use to perform a truly clean installation of Windows 11 26H2.

If you encounter an issue while running the UUP Dump script during the first part of these instructions, open the script folder, right-click the “Remove_Failure_MountDr_TempDir.cmd” file, and select “Run as administrator”. After the process completes, run UUP Dump one more time.

Also, ensure your device has sufficient free space for the script to process the files without issues or delays. Typically, the computer requires approximately 70 GB of free space on the primary drive.

Once you have the ISO file, you can mount it in a virtual machine or use tools like Rufus and Ventoy to create a bootable USB media.

Pureinfotech’s Take

I see Tiny11 Builder as a niche tool rather than something every Windows user should use. If your goal is to install Windows 11 on your main computer, I’d still stick with Microsoft’s official ISO. However, if you’re building a virtual machine, testing software, experimenting with the operating system, or simply want to see how Windows 11 runs without many of the built-in apps, Tiny11 Builder is a practical option.

Over the years, Windows has continued to ship with more preinstalled apps and services, and not everyone wants or needs them. Tiny11 Builder gives advanced users a straightforward way to trim down the installation without having to download a modified ISO from an unknown source. Just remember that removing components can affect compatibility, so I wouldn’t use a debloated installation on a production machine unless I understood the trade-offs.

Would you use a debloated version of Windows 11, or do you prefer Microsoft’s standard installation? Let me know in the comments.

FAQs about creating Windows 11 26H2 ISO using Tiny11 Builder

Here’s a list of frequently asked questions (FAQs) and answers about creating a custom ISO file for version 26H2 using Tiny11 Builder.

What is Tiny11 Builder in Windows 11?

Tiny11 Builder is a third-party PowerShell script developed by community creator NTDEV that customizes Windows 11 installation media. It removes preinstalled apps, services, and components to produce a lighter ISO. It also supports creating a debloated version of Windows 11 that can be installed with reduced system requirements and optional local account setup.

How do you create a Windows 11 26H2 ISO using Tiny11 Builder?

To create a Windows 11 26H2 ISO using Tiny11 Builder, download the Windows 11 ISO, extract the script, mount the ISO, and run PowerShell as administrator. Run the script, select the correct drive and edition, and let it rebuild the installation media into a customized, debloated ISO file.

What is the difference between Tiny11 ISO and the official Windows 11 ISO?

The official Windows 11 ISO includes all default Microsoft apps, services, and integrations designed for full functionality. Tiny11 ISO removes many preinstalled components such as Edge, OneDrive, Xbox apps, and other services, focusing on performance and minimalism. It is designed for users who want a lighter, more customizable Windows installation.

Is Tiny11 Builder safe to use for Windows 11?

Tiny11 Builder is not an official Microsoft tool, so it may pose risks, such as missing system components or limited update compatibility. It’s generally safe for advanced users when used correctly, but you should always back up your data before modifying installation media or installing a custom Windows image.

Can Tiny11 Builder be used with UUP Dump to create a Windows 11 26H2 ISO?

Yes, Tiny11 Builder can be used alongside UUP Dump to create a Windows 11 26H2 ISO using the latest available builds. UUP Dump downloads updated Windows components, while Tiny11 Builder modifies the image to remove unnecessary apps and services, resulting in a more up-to-date and lightweight installation.

Does Tiny11 Builder allow local account setup during Windows 11 installation?

Yes, Tiny11 Builder includes an unattended setup configuration that bypasses the Microsoft account requirement during installation. This allows users to create a local account instead of signing in online, making setup faster and more privacy-focused, especially for offline use or simplified system configurations.

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