These titles launched with both 32-bit and 64-bit .exe files. However, the 32-bit versions are prone to "out of memory" crashes after 2-3 matches. Not recommended for long Master League sessions on Windows 7 32-bit.
Starting with PES 2018 , the series officially transitioned to a 64-bit requirement , meaning newer titles like PES 2019 , 2020, 2021, and the eFootball rebrand will not launch on a 32-bit OS. Minimum System Requirements (PES 2017 Example) pes windows 7 32 bit
If you have a physical DVD or a digital copy (from Steam or abandonware archives), follow this process to avoid errors. These titles launched with both 32-bit and 64-bit