Version 11.0.23 was the final security update released for Acrobat XI Pro before it reached EOL.
Version 11.0.23 is specific. It was the final security patch released on October 15, 2019 (two years after EOL). Adobe rarely supports dead software, but they made an exception for a critical vulnerability (CVE-2019-8072). So, 11.0.23 is the most stable, "least hackable" version of the abandonware. adobe acrobat xi pro 11.0 23 download
While Adobe pushes its cloud-based subscription (DC), thousands of users are desperately searching for version 11.0.23. Why? Because it was the last version before Adobe went full SaaS (Software as a Service) . Version 11
As of October 15, 2017, Adobe has discontinued all support, security patches, and activation servers for Acrobat XI. This has three consequences for your download attempt: Adobe rarely supports dead software, but they made