The software version you referenced, , was an optional hotfix update released by Adobe on November 23, 2020 , primarily to address bugs on Windows systems.

While "portable" and "free download" versions of this software are widely circulated on third-party sites, they carry severe security and legal risks. Adobe does not officially release "portable" versions of Acrobat Pro.

: Some Acrobat versions have been reported to interfere with or block third-party antivirus scanning, creating a "security hazard" where your system cannot verify the safety of incoming PDF files. Adobe Acrobat Pro pricing & options