Some older versions are preserved on the Internet Archive for historical/educational purposes.
If you are looking for PES 2015 or its successors, consider these verified options: download-pro-evolution-soccer-2015-apun-kagames-biz-rar
Offers Windows downloads for various entries in the Pro Evolution Soccer series. Some older versions are preserved on the Internet
Provides access to the PES 2015 Demo for a safe trial. download-pro-evolution-soccer-2015-apun-kagames-biz-rar