When I try to launch Photoshop from the Adobe Creative Cloud apps menu I get a popup that says "validating software license" that spins for about 20 seconds then disappears, only to reappear shortly after and repeat, and repeat, and repeat. Photoshop never launches. It was running fine on this Windows 7 computer up until about a week ago.
I have uninstalled and reinstalled several times. Both Photoshop alone, and uninstalled and reinstalled in combination with Creative Cloud. I have also uninstalled, deleted the folders C:\Program Files (x86)\Common Files\Adobe\Adobe PCD, C:\Program Files (x86)\Common Files\Adobe\caps, C:\Program Files (x86)\Common Files\Adobe\Adobe Creative Cloud, C:\ProgramData\Adobe\SLstore, and renamed the opm.db file, and reinstalled, only to come back to the "validating software license" loop.
My license is valid. When I sign in to adobe.com with my email address it offers to "download" Photoshop, and not "download trial".