The update, released on October 13, 2015, is the final planned update for the Acrobat X product cycle. Adobe officially ended support for this version on November 15, 2015 .
Running Acrobat X Pro without update 10.1.16 is a security risk. The patch fixes the "CoolType.dll" exploit (CVE-2015-3050) and several other vulnerabilities that allow malicious PDFs to take over your PC. Adobe Acrobat X Pro Update 10.1.16 Download
But as you click that install button, remember that you are preserving history, not just software. You are running a program from a time when we believed we bought software to keep it, not just to lease it until the next billing cycle. Enjoy the stability of 10.1.16, but keep one eye on the horizon. The internet is changing, and eventually, even the sturdy walls of Acrobat X will not be enough to keep the modern world out. The update, released on October 13, 2015, is