If you previously purchased a retail or digital copy of CS6, you can retrieve your serial number through official Adobe channels:
If you have the original boxed version, the 24-digit serial number is typically located on the back of the DVD sleeve or inside the product box. Current Activation & Support Status Serial Number Adobe Photoshop Cs6 13.0.1 Final
As of 2024–2026, the status of CS6 activation is as follows: If you previously purchased a retail or digital