Aside from security, the .msp feature set includes stability patches for the 11.0.23 build:
The figure on the screen was attempting a quadruple somersault. It kept failing. The simulation would collapse, the bones would scatter like dropped pixels, and then the figure would climb back up and try again. acrobatupd11023.msp
No. Double-clicking an .msp file opens a "Windows Installer Patch" dialog asking which product to patch, but often fails. Use msiexec.exe /p from an elevated command prompt. Aside from security, the
However, as the years passed, the landscape changed. Adobe officially retired Acrobat XI on October 15, 2017, meaning our hero, AcrobatUpd11023.msp Aside from security