Photoshop latest update not compatable with Windows 7

I have been on the Adobe Cloud and selected to update my older version of Photoshop to the latest version which I believe is V2.2? On succsesful download I am now unable to use Photoshop because it says it is not compatable with my current Windows 7 operating system. Is there any way I can re-install the older verion that was compatible with Win 7? Any help would be appreciated.