If you must attempt to run this version, community experts suggest the following steps, though they are not guaranteed to work:
While some users have successfully installed it on Windows 11, doing so requires manual workarounds and comes with significant stability and security risks. The Challenges of Legacy Support
On modern ARM-based Windows 11 devices (like Surface Pro with Snapdragon processors), Acrobat X Pro may fail to install entirely because it lacks a native ARM build and requires 32-bit (x86) emulation.