Chrome Erweiterung deaktivieren
Its a DWORD value.
Try navigating to HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Adobe\Acrobat Reader\DC\Installer
If ENABLE_CHROMEEXT key is there, you can select the value > right-click > Modify and toggle its value.
If its not, right-click Installler > New DWORD Value.