Adobe’s CS6 activation servers are still technically online, but they are finicky. If you have a legitimate, perpetual license key (a serial number), you might encounter errors like "Connection failed" or "Activation server unavailable."
If you need the functionality of Photoshop without the headache of legacy activation codes, consider these modern, legal, and often free paths: 1. Photopea (Free & Web-Based) perpetual license key (a serial number)