Adobe now offers the current and ONE older version via the online program manager . I do not know how far back this process will go, but try... Direct Download Links https://prodesigntools.com/tag/ddl MAY help -you MUST do what it says in Note: Very Important Instructions -https://prodesigntools.com/adobe-cc-2015-direct-download-links.html#download-instructions -the prodesign links go directly to Adobe's file server, so this process will --only work until Adobe completely removes the old version(s) from the server . IF/When you do have a download, be sure to copy it to AT LEAST one external device -since Adobe does sometimes remove old versions from the server -a usb flash drive or external hard drive, or write to a DVD
Anything older I can only get from the Adobe Customer Service, BUT only the x.0 Versions (14.0, 15.0,... etc.). But it has to be 15.1 which they cannot provide.... for some reason. So they sent me here to the forum.