At the time of new installation, the repaired installation folder of
"C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1 "has already been gene.

Normally, this folder is a recognition generated during installation repair,
but why does it already exist?

Also, the process that actually starts uses the one in that folder
("C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe").

Installation environment
Windows10Pro 21H1

Version
2021.007.20099