ZIP archives created in 4D with a password may use AES encryption, which is not supported by the standard Windows unzipper. As a result, you might encounter issues when trying to extract these files.

To solve this, use a third-party utility like 7-Zip, WinRAR, or PeaZip, which support AES encryption. Simply download one of these tools, right-click on the ZIP file, select the extraction option, and enter the password when prompted. This will allow you to access your encrypted files without any issues.