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Eviemuy's avatar
Eviemuy
Copper Contributor
Aug 17, 2026

Is UUP dump a legitimate tool for Windows ISO download?

I want to download some old version of Windows ISO but Microsoft does not hold these ISO image files on its website now. I heard about UUP dump is also an available place for downloading Windows ISO ...
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DanielDavis's avatar
DanielDavis
Iron Contributor
Aug 17, 2026

UUP dump is an open-source tool that fetches official update files from Microsoft's servers and combines them into a complete ISO. It is best suited for users who need older Windows versions that Microsoft no longer hosts on their official website. As a reliable solution for UUP dump Windows 10 ISO file download, it provides download scripts that build the ISO directly on your PC using genuine Microsoft files.

How to UUP dump Windows 10 ISO file download

Step 1: Visit the official website

Step 2: Search for the Windows version you need

Step 3: Select the language, version, and architecture

Step 4: Click Download. This will generate a script.

Step 5: Choose one of the following options:

  • Download and convert to ISO, or download the script.
  • Run the script:
  • On Windows: Run the .cmd file
  • On Linux/macOS: Run the .sh script

Step 6: Wait for the script to finish

The ISO file will be generated in the same folder.

The software is open source. The generated ISO image is bit-for-bit identical to Microsoft’s official ISO image, so this has become a safe and legal way to obtain older versions of Windows after the official links were removed.