Using UUP Dump to Download Windows 11 Build 27749 and Other ISO Files

LAST UPDATED 11/13/2024: You can obtain the ISO file for any Windows 11 preview build, including build 27749 from the Canary channel or other channels like Dev, Beta, and Release Preview. To do this, you’ll need a third-party application called “UUP Dump.”

While Microsoft does provide ISO files for Windows 11 previews to facilitate testing clean installations and in-place upgrades on virtual machines or spare computers, this isn’t always guaranteed.

UUP Dump is a utility that empowers you to generate a custom ISO file from any publicly released Windows 11 preview. This tool is essentially a collection of scripts and applications that retrieve the latest builds from Microsoft’s servers, producing an unofficial ISO ready for installation.

In this tutorial, I will guide you through the process of utilizing UUP Dump to download the ISO file for any public preview version of Windows 11.

Steps to Download Any Windows 11 Preview ISO Using UUP Dump

To get the ISO file for any Insider Preview build of Windows 11 (like build 27749), follow these instructions:

1. Open the UUP Dump website.

2. Select the Downloads tab.

3. From the “Windows 11” menu, choose the desired operating system channel or release (24H2, 23H2, 22H2, or 21H2).

4. Opt for the “Windows 11 Insider Preview” option to download the most recent (x64) ISO, such as build 27749 from the Canary Channel.

   

5. Utilize the “Language” dropdown to select your preferred installation language.

   

6. Click on the Next button

7. Choose which editions you want to include in your Windows 11 ISO file.

   

8. Hit the Next button once again

9. Select the “Download and convert to ISO” option.

   

10. In the “Conversion options” section, deselect all options (doing so will expedite the ISO creation process).

11. Click the “Create download package” button to download the tool to your device.

12. Access the zip file using File Explorer.

13. Select the Extract all option.

    

14. Choose a location to extract the files.

15. Click on the Extract button.

16. Right-click on the uup_download_windows.cmd batch file and choose Run as administrator.

    

17. Select the More info option.

18. Then, click the Run anyway button to start the process

19. Press the “R” key to allow the script to execute once, then hit Enter.

20. When prompted, press the 0 key to exit the screen.

After completing these steps, the Windows 11 ISO file will be generated in the folder where you extracted the UUP Dump tool. You can utilize this ISO to upgrade a testing virtual machine to the latest Windows 11 preview. Alternatively, you can employ third-party utilities like Rufus to create USB media for installing the OS on an additional computer.