: If a licensed version keeps reverting to trial mode, try updating through Help > Updates to version 13.0.4, which addressed known licensing bugs. Common Technical Fixes

A cracked CS6 Extended often crashes on Windows 10/11 or macOS Catalina and newer (which dropped 32-bit support). The “trial expired” message may disappear, but the software becomes unstable.

: Adobe officially ended sales of CS6 in 2017. There are no legitimate outlets to purchase a "new" serial number today.