While Windows has built-in tools, third-party software often handles complex or split archives better.
If you don't want to install software, you can use online tools like iScanner's ZIP Extractor to unzip files directly in your browser.
If this file is part of a split archive, ensure you have downloaded every "piece" into the on your computer. Missing parts will prevent the extraction from completing. 2. Use a Reliable Extraction Tool
Select (Windows default) or "7-Zip > Extract Here" if you installed 7-Zip.