Over its lifecycle, Adobe released incremental updates to address bugs and security vulnerabilities. Version 11.0.23, released in November 2017, was one of the final planned updates for the product line, primarily serving as a maintenance patch to resolve stability issues and minor security flaws. The Dilemma of Downloading Legacy Software
: Official support ended on October 15, 2017 . Because activation servers have been retired, you may face significant issues activating or registering the software on new devices. Download Adobe Acrobat Xi Pro 11.0.23