I assume that CS6 has left something in the registry of the 64-bit installation that no longer allows me to install Photoshop with my current (valid) serial number, but I have no idea how to fix it or get through to Adobe help. Tonight I've been on for almost an hour and am still waiting. Each time I get an agent quickly, but after asking a few questions they tell me they need to transfer me to the "install department." The other night I was left in limbo a half hour waiting for the install department before I gave up. I have tried contacting Adobe online chat help twice. However, on the 64- bit installation, even when I try uninstalling CS6 and installing it again, it accepts my serial number, but then gives me the "licensing for this product has expired message." My Photoshop Elements 2018 asked for an update, but the update failed and I received an error message: Your serial number is expired - or has been illegally. Hence, you can utilize a product key finder like iSumsoft Product Key Finder to access the Registry.ifferent from Windows Registry, product key finder finds the real serial number. I did, however, upgrade to a new hard drive when I upgraded my operating system, so I was able to put the old hard drive back in and deactivate the original installation after the fact. Adobe flash cs6 trial expired serial number It means that the serial number found by product key finder can be used to install Adobe CS6 directly. In hindsight, after researching the problem, I realize I should had deactivated CS6 on my 32-bit installation before upgrading the computer, but I didn't. When I reinstalled Photoshop CS6, I got an error "licensing for this product has expired." This of course meant I had to do a clean reinstall of all my software. I recently upgraded my operating system on the same computer from Windows 7 32-bit to Windows 7 64-bit.