Approximately 106 MB for Windows ( AcrobatUpd10116.msp ) and 144.9 MB for macOS ( AcrobatUpd10116.dmg ). End of Support Warning
Since Acrobat X is an older, unsupported version (end of support was November 15, 2015), official download links may no longer be directly accessible on standard Adobe product pages. However, you can find the update files through the following methods: Official Enterprise Release Notes : You can find technical details and direct links for the AcrobatUpd10116.msp (Windows, 106 MB) and AcrobatUpd10116.dmg (Macintosh, 144.9 MB) installers on the Adobe Acrobat ETK Release Notes Adobe FTP Site Adobe Acrobat X Pro Update 10.1.16 Download
Registry permission corruption. Fix: Run the installer as an Administrator. Use Microsoft's SubInACL tool to reset permissions on that key, or temporarily disable antivirus real-time scanning (legacy AV often locks registry keys). Approximately 106 MB for Windows ( AcrobatUpd10116
In short: Unpatched versions are a hacker’s welcome mat. Fix: Run the installer as an Administrator
If you are unable to download the update from the Adobe website, you can try the following alternative links: