Aside from security, the .msp feature set includes stability patches for the 11.0.23 build:
: No longer officially supported by Adobe; becoming increasingly difficult to find on official servers. Installation & Availability
: You can often still find the file on Adobe's public FTP server at ftp://://adobe.com
The file acrobatupd11023.msp is typically associated with Adobe Acrobat version 11.0.23. The "11" in the file name corresponds to the major version of Adobe Acrobat, while "0.23" represents the build or patch version. This file is usually distributed through Adobe's official channels, such as the Adobe Download Center or through the Adobe Acrobat auto-update mechanism.
Before installing, ensure you have a base version of Adobe Acrobat 11.0 (or a later update like 11.0.20) already installed. : Open Windows Task Manager .