How to Use UUP Dump on macOS: Guide & Troubleshooting

How to Use UUP Dump on macOS: Guide & Troubleshooting


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What is UUP Dump

UUPDump, also known as Unified Update Platform Dump, is a popular utility used by Windows enthusiasts and power users to download and create offline Windows update packages. It allows users to access and download Windows update files directly from Microsoft’s servers, enabling them to create customized installation media or perform offline updates on their Windows systems.

UUPDump was developed as a response to the changes introduced by Microsoft in their Unified Update Platform (UUP). The UUP introduced a more efficient and streamlined way of delivering Windows updates, but it made it challenging for users to obtain standalone update files. UUPDump fills this gap by providing a tool that can interact with Microsoft’s servers and retrieve the necessary files for offline use.

With UUPDump, users can select the specific Windows version, edition, and language they need, and the utility will generate a set of download links for the corresponding update packages. These packages can be used to create installation media, integrate updates into existing installations, or perform offline updates without an active internet connection.

The UUPDump utility has gained popularity among Windows enthusiasts who prefer to have more control over their Windows updates. It allows users to avoid the lengthy online update process, especially when dealing with multiple systems or performing clean installations. Additionally, UUPDump enables users to customize their Windows installations by integrating specific updates or language packs as per their preferences.

It’s important to note that UUPDump is a third-party tool and not an official Microsoft product. It is primarily intended for advanced users and should be used with caution. As with any tool that interacts with operating system components, it is recommended to exercise due diligence, download from trusted sources, and ensure compatibility with the specific Windows version and edition being used.

UUP protocol

The UUP protocol, short for Unified Update Platform protocol, is a proprietary technology developed by Microsoft for efficient and incremental delivery of Windows updates. It is designed to optimize the update process by transmitting only the necessary components, reducing the download size and time required for updates.

While the specific technical details of the UUP protocol are not publicly disclosed, it involves a combination of client-server communication and data compression techniques. Here are some key aspects of the UUP protocol:

  1. Differential Downloads: The UUP protocol employs a differential download approach, where only the differences between the existing system state and the updated state are transmitted. This enables smaller update packages by transmitting only the changed files or components.

  2. Express Updates: Express Updates further enhance the efficiency of the UUP protocol by utilizing binary delta compression. Instead of transmitting individual files, binary deltas are generated, containing only the binary differences between the original and updated files. This reduces the download size even further.

  3. Metadata and Catalogs: The UUP protocol utilizes metadata and catalogs to describe the available updates and their dependencies. These metadata files provide information about the required files, versions, languages, and other relevant details necessary for the update process.

  4. Server-Client Interaction: The UUP protocol facilitates communication between the client (e.g., Windows Update client) and Microsoft’s servers. The client sends requests for updates, specifying the system configuration, required updates, and other parameters. The servers respond with the appropriate update packages and metadata.

  5. Delivery Optimization: UUP protocol integrates with Microsoft’s Delivery Optimization technology, which allows users to download updates from alternative sources, such as peer-to-peer networks or local network cache, to reduce bandwidth usage and speed up the update process.

Overall, the UUP protocol is designed to make the update process more efficient, reducing the download size and time required for Windows updates. While specific technical details are not publicly available, Microsoft utilizes this proprietary protocol to deliver updates to Windows devices using its Unified Update Platform.

The information provided does not constitute legal advice.

The legality of utilizing UUP Dump depends on various factors, including the specific circumstances of its usage and the laws in your jurisdiction. The tool itself, UUP Dump, is developed by independent developers to facilitate access to Windows update files directly from Microsoft’s servers.

However, it is crucial to consider and adhere to Microsoft’s terms of service, software licensing agreements, and applicable copyright laws. The usage of UUP Dump or the Windows update files obtained through it may potentially infringe upon Microsoft’s rights if used without proper authorization or licensing.

To ensure compliance and legality, it is recommended to use UUP Dump for personal, non-commercial purposes and to obtain appropriate licenses or permissions from Microsoft if you intend to use the downloaded update files for commercial use or on multiple systems.

As laws and regulations can vary, it is advisable to review the terms of service, licensing agreements, and copyright laws specific to your region. If you have any uncertainties or concerns regarding the legal usage of UUP Dump, it is advisable to seek legal advice or consult with Microsoft or authorized representatives to ensure compliance with the applicable laws and licenses.

Use UUP Dump on Mac

To acquire Windows installation ISO files using UUP Dump, follow these steps:

  1. Visit the UUP Dump website, such as , where you can access the necessary tools.
  2. Obtain the necessary files by downloading them from in Zip format.
  3. Extract the downloaded files by unzipping the archive.
  4. Run to download the Windows installation files provided by UUP Dump in ISO format for the desired Windows version and edition.
  5. Open the downloaded files to access the Windows installation ISO image, which can be used for various purposes, such as creating bootable media or performing clean installations. For example, launch VMWare Fusion or Parallels Desktop virtualization software on your macOS system and choose the ISO file as the virtual machine’s installation media.
sh ./
Downloading converters...
[NOTICE] CUID#7 - Redirecting to
Download complete: files/
Download complete: files/convert_ve_plugin
Download complete: /Users/.../aria2_script.9201.txt
Download complete: UUPs/Microsoft-Windows-Client-Desktop-Required-Package.ESD
CAB -> ESD: Microsoft-Windows-LanguageFeatures-Speech-en-us-Package-arm64
Creating ISO image...
Total translation table size: 2048
Total rockridge attributes bytes: 0
Total directory bytes: 0
Path table size(bytes): 10
Max brk space used 0
2194437 extents written (4286 MB)

Install required dependencies by uup dump

You can install the dependencies required for UUP Dump using Homebrew (brew).

brew install aria2

brew tap minacle/chntpw
brew install minacle/chntpw/chntpw

brew install cdrtools
brew install wimlib
brew install cabextract


Warning: No available formula with the name “chntpw”.


brew tap minacle/chntpw
brew install minacle/chntpw/chntpw

cabextract does not seem to be installed


brew install cabextract

wimlib-imagex does not seem to be installed


brew install wimlib

No available formula with the name “genisoimage”.

genisoimage nor mkisofs does seem to be installed

brew install genisoimage get error No available formula with the name "genisoimage".


brew install cdrtools