Yes, if you own a legitimate CS6 license. Adobe’s EULA states you are entitled to use the software perpetually. Adobe’s failure to maintain activation servers does not revoke your license. The workarounds here merely enable you to exercise your legal right to use the software you paid for.

: The CS6 installer generates a unique 44-character Request Code based on your machine's hardware and serial number.

Choose "Install — I have a serial number" and enter your valid CS6 key.

The interface of Photoshop CS6 bloomed across his screen, gray and un-subscription-burdened. Elias leaned back, the hum of the old machine suddenly sounding less like a buzz and more like a purr. The ghost was back in the machine, and for today, "perpetual" still meant something.