I resolved this issue for one of my customers... In short, a particular older .plist file needs to be removed. The Acrobat installer would error when trying to convert this older file to .plist format.
DESCRIPTION OF ERROR
I found the following errors in the Acrobat installer log:
2023-12-04 17:53:36-06 Summus07 package_script_service[872]: ./postinstall: Error in converting the plist /Library/Preferences/com.adobe.PDFAdminSettings.plist to xml1 format
2023-12-04 17:53:36-06 Summus07 package_script_service[872]: ./postinstall: Could not install PDFAdminSettings
SOLUTION STEPS
1. Uninstall Acrobat (using the Adobe Creative Cloud app).
2. Remove the following file: /Library/Preferences/com.adobe.PDFAdminSettings.plist
3. Installe Acrobat (using the Adobe Creative Cloud app).