The file is the official Windows Installer Patch (MSP) file for the final, definitive software update ( version 11.0.23 ) released by Adobe for its legacy Adobe Acrobat XI (11.0) Pro and Standard software suites. Issued as a planned lifecycle update on November 14, 2017 , this patch represents the terminal iteration of Acrobat 11 before the ecosystem shifted entirely to the subscription-based Adobe Acrobat DC (Document Cloud) and multi-year perpetual editions.
When software developers want to update a program on Windows, they often bundle the changes into an .msp file. The file is exactly that—a small, focused update pack for Adobe Acrobat XI Pro and Standard editions .
