Unsupported. Adobe no longer provides security updates, technical support, or bug fixes for any XI derivatives.
No. 11.0.27 is purely security and stability. Feature development stopped with Acrobat DC. Adobe Acrobat XI Pro 11.0.27 Patch download
– Adobe occasionally leaves old patches on unlisted FTP directories. A direct link from Adobe’s domain (ftp.adobe.com) that still works as of this writing is: Unsupported
: Continued support for interactive forms and data collection via the FormsCentral integration Important Considerations for Legacy Users Compatibility Issues the patch is useless.
No. The patch requires a full base installation (11.0.00–11.0.26) and a valid license key. Without the base installer, the patch is useless.