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Open your php.ini file, find ;extension=openssl , remove the semicolon ( ; ), and save the file. Connection Timeouts
Re-run the installer and ensure the "Add to PATH" option is checked, or manually add C:\Users\ \AppData\Roaming\Composer\vendor\bin to your System PATH. "The openssl extension is missing" download composer for windows
Verify the installer SHA-384 (optional but recommended for security). Run the setup script: php composer-setup.php Open your php
Sometimes the connection to Packagist (the main Composer repository) can be slow or blocked. Open your php.ini file
If you don't have it, download it from the official PHP for Windows site or use a local server stack like XAMPP or WAMP.