Most retro gaming communities now classify PES 2011 as —software whose copyright holder is no longer selling or supporting it. While not legal defense, it is widely tolerated. If you have a dusty DVD in your closet, applying a crack to your own installation is generally considered fair use for software preservation.
Enter them into the activation field provided in the game's manual activation window. If the official SecuROM activation site
: The best way to play PES 2011 legally is by purchasing it through official channels. Unfortunately, as the game is quite old, it might not be directly available for purchase through modern digital stores. However, you might find physical copies or older digital storefronts that still support it.
Paste the code into the field and click Activate . Troubleshooting Tips
The beautiful game of PES 2011 is still worth playing—the Master League, the licensed Champions League nights, and the legendary commentators Jon Champion and Mark Lawrenson. But do not waste your weekend searching for a dead activation code. Patch the executable, turn off your Wi-Fi if you must, and relive 2010’s finest football simulation.